Browse
Your Cart ()
cload

GUARANTEED SAFE & SECURE CHECKOUT

FREE SHIPPING ON ALL ORDERS
Siemens 6ES7321-1EH01-0AA0 S7-300 SM321 16 DI 24 V DC digital input module.

Siemens 6ES7321-1EH01-0AA0

Your Price:
$619.00
Add to wishlist
Checkout Secure
Order in the next to get it by

10+ Available in Stock

  • Image of Free Shipping on All Orders

    Free Shipping on All Orders
  • Image of 1 Year Warranty

    We will beat any price

    1 Year Warranty
  • Image of Experts Aavaiable 7/24/365

    Free shipping

    Experts Aavaiable 7/24/365
  • Image of 30 days money-back

    30 days money-back

Siemens 6ES7321-1EH01-0AA0 

Overview

The Siemens 6ES7321-1EH01-0AA0 is a SIMATIC S7-300 digital input module (SM321) designed for efficient signal acquisition in industrial automation systems. It provides 16 optically isolated digital inputs operating at 24 V DC, ensuring high reliability, noise immunity, and safe operation in demanding industrial environments.

Key Features

  • SM321 digital input module for S7-300

  • 16 digital inputs (DI)

  • Input voltage: 24 V DC

  • Optically isolated channels

  • 20-pole front connector

  • Fast and reliable signal processing

  • Compact modular design

Technical Specifications

  • Siemens Code: 6ES7321-1EH01-0AA0

  • Series: SIMATIC S7-300, SM321

  • Number of Inputs: 16

  • Input Type: Digital (DC)

  • Input Voltage: 24 V DC

  • Input Current: ~7 mA per channel

  • Response Time: ~3 ms

  • Bus System: S7-300 backplane

  • Connection: 20-pin front connector

  • Protection Rating: IP20

  • Operating Temperature: 0 °C to +60 °C

  • Certifications: CE, UL

Applications

  • Industrial automation systems

  • Machine control panels

  • Process automation

  • Sensor signal acquisition (24 V DC)

  • Manufacturing and production lines

Why Choose Siemens 6ES7321-1EH01-0AA0?

  • Reliable 24 V DC signal acquisition

  • High electrical isolation for safety

  • Seamless integration with S7-300 systems

  • Proven Siemens industrial reliability

Order Now

Upgrade your automation system with the Siemens 6ES7321-1EH01-0AA0 — precise, reliable, and built for industrial signal processing.

Brand-New, Authentic, Factory-Sealed Components At PLCVERSE, every item we offer is guaranteed to be brand-new, original, and delivered in its factory-sealed packaging. Our parts are sourced with strict quality control to ensure you receive genuine automation components that meet top industry reliability and performance standards.
1-Year Warranty Coverage Every new product purchased from PLCVERSE includes a full 1-year warranty. We stand behind the quality and durability of our automation components, providing protection against manufacturing defects under normal use. Our commitment is to ensure you receive dependable, high-performance parts with complete peace of mind.
PLCVERSE is an independent seller of industrial automation equipment. We are not an authorized distributor, partner, or representative of any of the manufacturers featured on this website. All brand names, trademarks, and logos remain the property of their respective owners. PLCVERSE has no association or endorsement from ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other brands mentioned.

Description

Siemens 6ES7321-1EH01-0AA0 

Overview

The Siemens 6ES7321-1EH01-0AA0 is a SIMATIC S7-300 digital input module (SM321) designed for efficient signal acquisition in industrial automation systems. It provides 16 optically isolated digital inputs operating at 24 V DC, ensuring high reliability, noise immunity, and safe operation in demanding industrial environments.

Key Features

  • SM321 digital input module for S7-300

  • 16 digital inputs (DI)

  • Input voltage: 24 V DC

  • Optically isolated channels

  • 20-pole front connector

  • Fast and reliable signal processing

  • Compact modular design

Technical Specifications

  • Siemens Code: 6ES7321-1EH01-0AA0

  • Series: SIMATIC S7-300, SM321

  • Number of Inputs: 16

  • Input Type: Digital (DC)

  • Input Voltage: 24 V DC

  • Input Current: ~7 mA per channel

  • Response Time: ~3 ms

  • Bus System: S7-300 backplane

  • Connection: 20-pin front connector

  • Protection Rating: IP20

  • Operating Temperature: 0 °C to +60 °C

  • Certifications: CE, UL

Applications

  • Industrial automation systems

  • Machine control panels

  • Process automation

  • Sensor signal acquisition (24 V DC)

  • Manufacturing and production lines

Why Choose Siemens 6ES7321-1EH01-0AA0?

  • Reliable 24 V DC signal acquisition

  • High electrical isolation for safety

  • Seamless integration with S7-300 systems

  • Proven Siemens industrial reliability

Order Now

Upgrade your automation system with the Siemens 6ES7321-1EH01-0AA0 — precise, reliable, and built for industrial signal processing.

Condition

Brand-New, Authentic, Factory-Sealed Components At PLCVERSE, every item we offer is guaranteed to be brand-new, original, and delivered in its factory-sealed packaging. Our parts are sourced with strict quality control to ensure you receive genuine automation components that meet top industry reliability and performance standards.

Warranty

1-Year Warranty Coverage Every new product purchased from PLCVERSE includes a full 1-year warranty. We stand behind the quality and durability of our automation components, providing protection against manufacturing defects under normal use. Our commitment is to ensure you receive dependable, high-performance parts with complete peace of mind.

Disclaimer

PLCVERSE is an independent seller of industrial automation equipment. We are not an authorized distributor, partner, or representative of any of the manufacturers featured on this website. All brand names, trademarks, and logos remain the property of their respective owners. PLCVERSE has no association or endorsement from ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other brands mentioned.
Siemens 6ES7321-1EH01-0AA0

Siemens 6ES7321-1EH01-0AA0

$619.00
Add to wishlist
Siemens 6ES7321-1EH01-0AA0

Siemens 6ES7321-1EH01-0AA0

Your Price:
$619.00
Item Added to Your Cart
Customers also bought...
100-C09KF01 Allen Bradley Contactor, 9A, 3-pole, for industrial control, 24V AC, durable design, premium quality in stock 100-C09KF01 Allen Bradley Contactor - 9A, 3-Pole, 24V AC,
$218.00
Allen-Bradley 100-C12EJ10 contactor, 12A, engineered for industrial automation switching and control. 100-C12EJ10 Allen-Bradley
$188.00
Allen-Bradley 100-C12ZJ01 compact 12A contactor with 24V AC coil, featuring NO/NC contacts, ideal for industrial applications. 100-C12ZJ01 Allen-Bradley Contactor, 12A, 1NO, 1NC, 24V AC Coil,
$510.00
140M-C2E-C16 Circuit Breaker for motor protection in industrial settings, Allen-Bradley brand, reliable safety. 140M-C2E-C16 Circuit Breaker Allen-Bradley
$270.00
Image showing Allen-Bradley 1492-SP3C040 supplementary protector, 24V DC, suitable for compact industrial applications 1492-SP3C040 Allen-Bradley Supplementary Protector, 24V DC, 3.2A,
$238.00
Allen Bradley 1492-SP3C320-N, 3-pole, 320A protector, NEMA 1, industrial circuit protection, ready to ship, free shipping 1492-SP3C320-N Allen Bradley Supplementary Protector, 3-Pole,
$490.00
Allen Bradley 1492-SPM3D400 surge protection module, 400V rating, 3-phase, industrial use, DIN rail mountable 1492-SPM3D400 Allen Bradley Surge Protection Module - 400V, DIN
$330.00
Allen Bradley 150-C60NBD Soft Starter for industrial motor control, compact and efficient, ready for shipment. 150-C60NBD Allen Bradley SMC-3 Soft Starter, 60A, 200-480V AC
$1,562.00
Allen Bradley 1585D-M4TBDM-5 Ethernet Cable, Cat5e, 4 conductors, high-performance in industrial automation settings 1585D-M4TBDM-5 Allen Bradley Ethernet Cable - Cat5e, 100BASE-TX,
$145.00
Allen Bradley 1734-IB4 Input Module with 4 channels for reliable industrial digital input. Compact, efficient, high-performing. 1734-IB4 Allen Bradley Input Module, 4-Channel, Digital Input
$75.00
Allen Bradley 1756-CP3 Serial Cable for ControlLogix, 3 meters, durable design, USA stock ready to ship 1756-CP3 Allen Bradley ControlLogix Serial Cable, 3 Meters
$158.00
Allen Bradley 1756-TBCH Terminal Base for ControlLogix high-speed I/O, USA in stock, quick shipment, free delivery 1756-TBCH Allen Bradley ControlLogix Terminal Base
$54.00
Allen Bradley 1769-L19ER-BB1B controller with dual Ethernet ports and 1MB memory, ideal for compact automated systems. 1769-L19ER-BB1B Allen Bradley CompactLogix 5370 Controller, 1MB
$2,334.00
Allen-Bradley 1769-OB8 8-point 24V DC output module for CompactLogix in industrial automation control. 1769-OB8 Allen-Bradley
$342.00
High-quality 1771-P6S Allen Bradley SLC 500 Power Supply for industrial automation with reliable and efficient power output. 1771-P6S Allen Bradley SLC 500 Power Supply, 120/240VAC Input,
$530.00
Allen Bradley 1784-SD1 1GB SD Card for ControlLogix and CompactLogix, industrial grade memory solution 1784-SD1 Allen Bradley Secure Digital (SD) Card, 1GB for
$114.00
Allen-Bradley 20-HIM-A6 LCD module for PowerFlex, supporting control and parameter setup. 20-HIM-A6 Allen Bradley
$190.00
Allen-Bradley 2711P-RDT10C 6-inch PanelView terminal with touchscreen interface for industrial use. 2711P-RDT10C Allen-Bradley PanelView Plus 6" Display Terminal,
$1,530.00
ABB card enhances drive maintenance and monitoring 3AUA0000040000 – ABB
$1,650.00
Durable ABB 3HAC026787-002 FlexPendant docking station for IRC5. Secure and reliable mounting solution. 3HAC026787-002
$2,219.00
High-performance ABB 3HAC7998-1 communication module for advanced industrial automation systems, enhancing connectivity. 3HAC7998-1 – ABB
$380.00
3RW3027-1BB14 switch for precise motor control in demanding industrial situations 3RW3027-1BB14
$478.00
440G-T27121 Safety Interlock Switch by Allen Bradley, stainless steel, 24V DC, IP69K rated for industrial settings. 440G-T27121 Allen Bradley Guardmaster Safety Interlock Switch,
$372.00
Allen-Bradley 5069-IF8 Compact I/O Analog Input Module with 8-channel support for precise industrial automation 5069-IF8 Allen Bradley
$1,035.00
CompactLogix 5380 Allen-Bradley 5069-L320ER with dual Ethernet for versatile control in industrial settings. 5069-L320ER Allen Bradley
$4,210.00
Detachable Terminal Block for FLEX 5000 system analog modules with isolation and screw connections. 5094-RTB3I RTB
$194.00
ABB high-power diode, efficient for industrial rectifiers and optimized for energy conversion systems. 5SDD0135Z0401 ABB Welding Diodes
$298.00
6817-SV-3-M5 | Compact 3/2-Way pneumatic automation component 6817-SV-3-M5 | Compact 3/2-Way
$108.00
Allen Bradley 700-CF220KF Control Relay 220V AC 10A industrial automation switch 700-CF220KF Allen Bradley Control Relay, 220V AC, 10A,
$190.00
8M-A-PS-24V-E-0.3-M8D pneumatic automation component 8M-A-PS-24V-E-0.3-M8D
$67.00
Siemens SCALANCE IE TP Ethernet cord, 2m, Cat 6A, for high-speed, stable industrial data transmission. 8PCS Siemens 6GK1901-0DB20-6AA8
$400.00
FANUC A06B-0212-B700#0100 automation control component A06B-0212-B700#0100
$4,798.00
FANUC A06B-6290-H209 automation control component A06B-6290-H209
$6,027.00
ABB digital output module, model 1SAE231111R0640, for precise control in industrial automation systems ABB 1SAE231111R0640
$123.00
ABB current transformer ensures precision and protection in high-voltage applications, perfect for industrial use. ABB 1SAE351111R0640
$299.00
Compact and durable ABB 1SAM250000R1009 module for efficient motor control and power switching in industrial systems. ABB 1SAM250000R1009
$247.00
ABB OTDC16F2 contactor ensures dependable performance in industrial and commercial settings with compact design. ABB 1SCA105068R1001
$232.00
ABB 1SVR360563R1001 industrial control relay for reliable automation in various applications ABB 1SVR360563R1001
$834.00
Industrial control circuit transformer by ABB for stable power in automation systems, offering reliable performance. ABB 1SVR427032R0000
$554.00
Premium ABB circuit breaker for circuits. Reliable performance for industrial, commercial, and residential use. ABB 1SVR427036R0000
$1,298.00
ABB relay ensures motor safety and performance, designed for durability in industrial environments, reducing system failures. ABB 1SVR500020R1100
$624.00
ABB contactor module providing efficient motor control and power switching in industrial settings ABB 1SVR550824R9100
$378.00
ABB XT1B 160 contactor for industrial applications with 160A capacity and reliable load management features. ABB 1SVR730110R3300
$1,237.00
ABB CR-M110DC4L relay with 4CO configuration and 110V DC coil for efficient industrial control applications. ABB 1SVR730660R0100 | CR-M110DC4L
$1,033.00
Compact ABB contactor model 1SVR730712R1200 for reliable industrial circuit control and high switching capacity. ABB 1SVR730712R1200
$803.00
Compact ABB circuit breaker with 16A, 2 poles, Type C, for standard electrical protection needs. ABB 1SVR730712R1400
$867.00
ABB 1SVR730824R9300 control transformer, 230V to 24V conversion for industrial automation and control systems. ABB 1SVR730824R9300
$184.00
ABB 1SVR730830R0400 electronic timer relay for precise timing control with adjustable settings ABB 1SVR730830R0400
$598.00
ABB 1SVR750660R0200 relay module designed for reliable industrial automation and control system integration. ABB 1SVR750660R0200
$2,113.00

Related Products

Item Added to Your Cart
Customers also bought...
100-C09KF01 Allen Bradley Contactor, 9A, 3-pole, for industrial control, 24V AC, durable design, premium quality in stock 100-C09KF01 Allen Bradley Contactor - 9A, 3-Pole, 24V AC,
$218.00
Allen-Bradley 100-C12EJ10 contactor, 12A, engineered for industrial automation switching and control. 100-C12EJ10 Allen-Bradley
$188.00
Allen-Bradley 100-C12ZJ01 compact 12A contactor with 24V AC coil, featuring NO/NC contacts, ideal for industrial applications. 100-C12ZJ01 Allen-Bradley Contactor, 12A, 1NO, 1NC, 24V AC Coil,
$510.00
140M-C2E-C16 Circuit Breaker for motor protection in industrial settings, Allen-Bradley brand, reliable safety. 140M-C2E-C16 Circuit Breaker Allen-Bradley
$270.00
Image showing Allen-Bradley 1492-SP3C040 supplementary protector, 24V DC, suitable for compact industrial applications 1492-SP3C040 Allen-Bradley Supplementary Protector, 24V DC, 3.2A,
$238.00
Allen Bradley 1492-SP3C320-N, 3-pole, 320A protector, NEMA 1, industrial circuit protection, ready to ship, free shipping 1492-SP3C320-N Allen Bradley Supplementary Protector, 3-Pole,
$490.00
Allen Bradley 1492-SPM3D400 surge protection module, 400V rating, 3-phase, industrial use, DIN rail mountable 1492-SPM3D400 Allen Bradley Surge Protection Module - 400V, DIN
$330.00
Allen Bradley 150-C60NBD Soft Starter for industrial motor control, compact and efficient, ready for shipment. 150-C60NBD Allen Bradley SMC-3 Soft Starter, 60A, 200-480V AC
$1,562.00
Allen Bradley 1585D-M4TBDM-5 Ethernet Cable, Cat5e, 4 conductors, high-performance in industrial automation settings 1585D-M4TBDM-5 Allen Bradley Ethernet Cable - Cat5e, 100BASE-TX,
$145.00
Allen Bradley 1734-IB4 Input Module with 4 channels for reliable industrial digital input. Compact, efficient, high-performing. 1734-IB4 Allen Bradley Input Module, 4-Channel, Digital Input
$75.00
Allen Bradley 1756-CP3 Serial Cable for ControlLogix, 3 meters, durable design, USA stock ready to ship 1756-CP3 Allen Bradley ControlLogix Serial Cable, 3 Meters
$158.00
Allen Bradley 1756-TBCH Terminal Base for ControlLogix high-speed I/O, USA in stock, quick shipment, free delivery 1756-TBCH Allen Bradley ControlLogix Terminal Base
$54.00
Allen Bradley 1769-L19ER-BB1B controller with dual Ethernet ports and 1MB memory, ideal for compact automated systems. 1769-L19ER-BB1B Allen Bradley CompactLogix 5370 Controller, 1MB
$2,334.00
Allen-Bradley 1769-OB8 8-point 24V DC output module for CompactLogix in industrial automation control. 1769-OB8 Allen-Bradley
$342.00
High-quality 1771-P6S Allen Bradley SLC 500 Power Supply for industrial automation with reliable and efficient power output. 1771-P6S Allen Bradley SLC 500 Power Supply, 120/240VAC Input,
$530.00
Allen Bradley 1784-SD1 1GB SD Card for ControlLogix and CompactLogix, industrial grade memory solution 1784-SD1 Allen Bradley Secure Digital (SD) Card, 1GB for
$114.00
Allen-Bradley 20-HIM-A6 LCD module for PowerFlex, supporting control and parameter setup. 20-HIM-A6 Allen Bradley
$190.00
Allen-Bradley 2711P-RDT10C 6-inch PanelView terminal with touchscreen interface for industrial use. 2711P-RDT10C Allen-Bradley PanelView Plus 6" Display Terminal,
$1,530.00
ABB card enhances drive maintenance and monitoring 3AUA0000040000 – ABB
$1,650.00
Durable ABB 3HAC026787-002 FlexPendant docking station for IRC5. Secure and reliable mounting solution. 3HAC026787-002
$2,219.00
High-performance ABB 3HAC7998-1 communication module for advanced industrial automation systems, enhancing connectivity. 3HAC7998-1 – ABB
$380.00
3RW3027-1BB14 switch for precise motor control in demanding industrial situations 3RW3027-1BB14
$478.00
440G-T27121 Safety Interlock Switch by Allen Bradley, stainless steel, 24V DC, IP69K rated for industrial settings. 440G-T27121 Allen Bradley Guardmaster Safety Interlock Switch,
$372.00
Allen-Bradley 5069-IF8 Compact I/O Analog Input Module with 8-channel support for precise industrial automation 5069-IF8 Allen Bradley
$1,035.00
CompactLogix 5380 Allen-Bradley 5069-L320ER with dual Ethernet for versatile control in industrial settings. 5069-L320ER Allen Bradley
$4,210.00
Detachable Terminal Block for FLEX 5000 system analog modules with isolation and screw connections. 5094-RTB3I RTB
$194.00
ABB high-power diode, efficient for industrial rectifiers and optimized for energy conversion systems. 5SDD0135Z0401 ABB Welding Diodes
$298.00
6817-SV-3-M5 | Compact 3/2-Way pneumatic automation component 6817-SV-3-M5 | Compact 3/2-Way
$108.00
Allen Bradley 700-CF220KF Control Relay 220V AC 10A industrial automation switch 700-CF220KF Allen Bradley Control Relay, 220V AC, 10A,
$190.00
8M-A-PS-24V-E-0.3-M8D pneumatic automation component 8M-A-PS-24V-E-0.3-M8D
$67.00
Siemens SCALANCE IE TP Ethernet cord, 2m, Cat 6A, for high-speed, stable industrial data transmission. 8PCS Siemens 6GK1901-0DB20-6AA8
$400.00
FANUC A06B-0212-B700#0100 automation control component A06B-0212-B700#0100
$4,798.00
FANUC A06B-6290-H209 automation control component A06B-6290-H209
$6,027.00
ABB digital output module, model 1SAE231111R0640, for precise control in industrial automation systems ABB 1SAE231111R0640
$123.00
ABB current transformer ensures precision and protection in high-voltage applications, perfect for industrial use. ABB 1SAE351111R0640
$299.00
Compact and durable ABB 1SAM250000R1009 module for efficient motor control and power switching in industrial systems. ABB 1SAM250000R1009
$247.00
ABB OTDC16F2 contactor ensures dependable performance in industrial and commercial settings with compact design. ABB 1SCA105068R1001
$232.00
ABB 1SVR360563R1001 industrial control relay for reliable automation in various applications ABB 1SVR360563R1001
$834.00
Industrial control circuit transformer by ABB for stable power in automation systems, offering reliable performance. ABB 1SVR427032R0000
$554.00
Premium ABB circuit breaker for circuits. Reliable performance for industrial, commercial, and residential use. ABB 1SVR427036R0000
$1,298.00
ABB relay ensures motor safety and performance, designed for durability in industrial environments, reducing system failures. ABB 1SVR500020R1100
$624.00
ABB contactor module providing efficient motor control and power switching in industrial settings ABB 1SVR550824R9100
$378.00
ABB XT1B 160 contactor for industrial applications with 160A capacity and reliable load management features. ABB 1SVR730110R3300
$1,237.00
ABB CR-M110DC4L relay with 4CO configuration and 110V DC coil for efficient industrial control applications. ABB 1SVR730660R0100 | CR-M110DC4L
$1,033.00
Compact ABB contactor model 1SVR730712R1200 for reliable industrial circuit control and high switching capacity. ABB 1SVR730712R1200
$803.00
Compact ABB circuit breaker with 16A, 2 poles, Type C, for standard electrical protection needs. ABB 1SVR730712R1400
$867.00
ABB 1SVR730824R9300 control transformer, 230V to 24V conversion for industrial automation and control systems. ABB 1SVR730824R9300
$184.00
ABB 1SVR730830R0400 electronic timer relay for precise timing control with adjustable settings ABB 1SVR730830R0400
$598.00
ABB 1SVR750660R0200 relay module designed for reliable industrial automation and control system integration. ABB 1SVR750660R0200
$2,113.00