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Allen-Bradley 440R-W23218 MSR320P Safety Relay Input Expansion Module

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Allen-Bradley 440R-W23218 MSR320P

by Allen-Bradley

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OverviewThe Allen-Bradley 440R-W23218 MSR320P is a highly dependable safety relay input expansion module engineered to enhance the safety capabilities and versatility of industrial control systems. This robust unit seamlessly integrates into existing safety setups, providing three additional safety inputs and two PNP solid-state auxiliary outputs. Designed for optimal performance, the MSR320P draws its 24V DC power directly from the base unit, ensuring consistent and stable operation. Its compact form factor and industrial-grade construction make it suitable for demanding environments where both safety and operational integrity are crucial. Expanding your safety input capacity with this module helps achieve greater regulatory compliance and precise management of critical safety functions.Key Features Enhanced Safety System Capacity: Offers 3 supplementary safety inputs for increased system adaptability and adherence to standards. Dependable Auxiliary Outputs: Includes 2 PNP solid-state auxiliary outputs for smooth integration with other safety components. Efficient Power Delivery: Operates on 24V DC, conveniently supplied by the base unit, simplifying wiring and installation. Rugged Industrial Design: Constructed to endure harsh industrial conditions, ensuring enduring operation and reliability. Increased System Adaptability: Enables easier customization and expansion of safety circuits to meet evolving operational demands. Seamless Integration: Engineered for simple integration with Allen-Bradley Guardmaster 440R safety relays and other compatible systems. Optimized for Compliance: Aids in meeting and maintaining strict safety standards and regulations in industrial environments. Technical Specifications Model: 440R-W23218 (MSR320P) Type: Safety Relay Input Expansion Module Number of Inputs: 3 Safety Inputs Auxiliary Outputs: 2 PNP Solid-State Operating Voltage: 24V DC (Supplied from Base Unit) Mounting: DIN Rail Mountable Brand: Allen-Bradley Applications Industrial Safety Systems: Essential for expanding monitoring points in intricate industrial safety scenarios. Machinery and Equipment Protection: Fortifies the safety circuits of various machinery, safeguarding both personnel and assets. Emergency Stop and Interlock Applications: Ideal for incorporating extra emergency stop buttons or interlocking devices. Safety Circuit Expansion in Automation: Facilitates the growth and flexibility of automation safety circuits without extensive re-engineering. Process Control Environments: Ensures that critical safety functions are robust and expandable in sensitive process control operations. Robotics and Automated Manufacturing: Provides the necessary input expansion for sophisticated robotic safety zoning and control. Why Choose the 440R-W23218 MSR320P?Unrivaled Reliability: As an Allen-Bradley product, this module ensures the highest levels of quality and operational dependability, minimizing downtime.Future-Proof Your Safety System: Effortlessly expand your safety inputs as your operational requirements evolve, preventing costly system overhauls.Streamlined Installation: Designed for quick and straightforward DIN rail mounting, reducing both installation time and complexity.Enhanced Operational Safety: By providing additional avenues for safety monitoring, it significantly reduces risks within hazardous environments.Seamless Compatibility: Engineered to function flawlessly within the Allen-Bradley ecosystem, guaranteeing perfect integration with existing components.Cost-Effective Expansion: A smart investment for enhancing system capabilities without the need to replace entire safety control units.Order NowElevate your industrial safety standards today with the Allen-Bradley 440R-W23218 MSR320P Safety Relay Input Expansion Module. Invest in reliability, flexibility, and peace of mind. Add to cart and secure your operations. For more advanced safety solutions, explore our complete range of Guardmaster 440R Safety Relays.FAQWhat is the primary function of the Allen-Bradley 440R-W23218 MSR320P?The primary function of the 440R-W23218 MSR320P is to expand the input capacity of industrial safety relay systems by adding 3 safety inputs and 2 auxiliary outputs.How is the MSR320P powered?The MSR320P is efficiently powered by 24V DC, which is supplied directly from its connected base unit.Is this module compatible with other Allen-Bradley safety products?Yes, the 440R-W23218 MSR320P is designed for seamless integration with Allen-Bradley Guardmaster 440R safety relays and similar compatible systems.What kind of environments is this module suitable for?Thanks to its robust industrial design, the module is built to endure harsh industrial conditions, making it ideal for demanding environments where reliability is crucial.Can this module help with safety compliance?Absolutely. By extending safety input capacity and offering reliable operation, the MSR320P helps achieve and maintain rigorous safety standards and regulations in industrial settings.

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PRODUCT DETAILS

Allen-Bradley 440R-W23218 MSR320P

Overview

This is a genuine Allen-Bradley component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 440R-W23218 (MSR320P)
  • Type: Safety Relay Input Expansion Module
  • Number of Inputs: 3 Safety Inputs
  • Auxiliary Outputs: 2 PNP Solid-State
  • Operating Voltage: 24V DC (Supplied from Base Unit)
  • Mounting: DIN Rail Mountable
  • Brand: Allen-Bradley

Applications

  • Industrial Safety Systems: Essential for expanding monitoring points in intricate industrial safety scenarios.
  • Machinery and Equipment Protection: Fortifies the safety circuits of various machinery, safeguarding both personnel and assets.
  • Emergency Stop and Interlock Applications: Ideal for incorporating extra emergency stop buttons or interlocking devices.
  • Safety Circuit Expansion in Automation: Facilitates the growth and flexibility of automation safety circuits without extensive re-engineering.
  • Process Control Environments: Ensures that critical safety functions are robust and expandable in sensitive process control operations.
  • Robotics and Automated Manufacturing: Provides the necessary input expansion for sophisticated robotic safety zoning and control.

Why Choose the 440R-W23218?

Unrivaled Reliability: As an Allen-Bradley product, this module ensures the highest levels of quality and operational dependability, minimizing downtime.

Future-Proof Your Safety System: Effortlessly expand your safety inputs as your operational requirements evolve, preventing costly system overhauls.

Streamlined Installation: Designed for quick and straightforward DIN rail mounting, reducing both installation time and complexity.

Enhanced Operational Safety: By providing additional avenues for safety monitoring, it significantly reduces risks within hazardous environments.

Seamless Compatibility: Engineered to function flawlessly within the Allen-Bradley ecosystem, guaranteeing perfect integration with existing components.

Cost-Effective Expansion: A smart investment for enhancing system capabilities without the need to replace entire safety control units.

Availability & Shipping

  • In stock: 440R-W23218 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 440R-W23218 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The primary function of the 440R-W23218 MSR320P is to expand the input capacity of industrial safety relay systems by adding 3 safety inputs and 2 auxiliary outputs.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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