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Allen-Bradley 440P-MSLS11B safety limit switch with a short lever for industrial applications

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Allen-Bradley 440P-MSLS11B

by Allen-Bradley

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OverviewThe Allen-Bradley 440P-MSLS11B represents a high-caliber safety limit switch, meticulously crafted for accurate position detection across vital safety systems. This robust unit showcases a resilient 30mm metallic enclosure, specifically engineered to endure challenging industrial conditions. Its intelligent short lever activator is perfectly suited for installations requiring minimal space or precise, short-travel activation. Featuring one normally closed (N.C.) and one normally open (N.O.) snap-action contact, the 440P-MSLS11B delivers adaptable switching capabilities crucial for comprehensive safety circuits. The standard M20 conduit connection ensures effortless integration into existing industrial wiring setups. Emphasizing dependable operation and worker protection, this Allen-Bradley Guardmaster series switch epitomizes reliability and exactness.Key Features Durable 30mm Metallic Housing: Provides superior resilience and defense against impacts, vibrations, and environmental contaminants, guaranteeing enduring performance in harsh industrial settings. Space-Saving Short Lever Actuator: Optimized for scenarios with limited mounting area or those demanding minimal activation travel, offering versatile installation options. Versatile 1 N.C. and 1 N.O. Contacts: Delivers dual-channel switching potential, essential for devising redundant and highly dependable safety circuits in compliance with industry benchmarks. Reliable Snap-Acting Mechanism: Ensures swift, accurate, and consistent contact engagement, minimizing contact bounce and facilitating immediate response to actuator activation or deactivation. Standard M20 Conduit Connection: Simplifies electrical wiring and maintenance procedures while ensuring robust cable protection. Positive Opening Operation: Guarantees the dependable separation of normally closed contacts even if they become fused, bolstering safety by preventing unintended machinery startup. Allen-Bradley Quality & Reliability: Designed to the highest benchmarks, ensuring consistent operation, extended operational life, and adherence to rigorous safety standards. Technical SpecificationsThe Allen-Bradley 440P-MSLS11B safety limit switch is constructed with precision and durability: Product Type: Safety Limit Switch Catalog Number: 440P-MSLS11B Housing Material: Metal Actuator Type: Short Lever Contacts: 1 N.C. (Normally Closed), 1 N.O. (Normally Open) Contact Type: Snap Acting Conduit Connection: M20 ApplicationsThe adaptability and robust construction of the Allen-Bradley 440P-MSLS11B make it an excellent choice for various industrial safety applications, including: Machine Guarding: Essential for monitoring the status of safety gates, access panels, and protective covers on machinery. Safety Gate Interlocks: Provides critical feedback to control systems, preventing machine operation when safety barriers are open or improperly secured. Position Sensing in Safety Circuits: Accurately detects the position of moving mechanical components within safety-related control frameworks. Conveyor Systems: Utilized for emergency stop functions, product detection, or to confirm conveyor belt alignment. Packaging Machinery: Enhances operator safety by monitoring various access points and machine conditions during packaging processes. Compact & Restricted Space Installations: Ideally suited for mounting in tight areas where conventional larger actuators would not fit. Why Choose This Model?Uncompromised SafetyThe 440P-MSLS11B is engineered with positive opening functionality and snap-acting contacts to deliver dependable, fail-safe performance in demanding safety environments.Built to LastIts sturdy 30mm metal housing ensures exceptional durability, safeguarding internal components from severe industrial contaminants and mechanical stress.Optimized for EfficiencyThe short lever actuator facilitates installation in compact machinery, reducing design limitations and streamlining integration into a broader range of equipment.Order NowSecure the Allen-Bradley 440P-MSLS11B for your industrial safety needs. Contact us today for pricing and availability, or to discuss how this robust safety limit switch can enhance your operational safety and efficiency.FAQWhat is the primary function of the Allen-Bradley 440P-MSLS11B?Its primary function is to provide precise position sensing within critical safety applications, ensuring the safety of personnel and equipment.Is this switch suitable for harsh industrial environments?Yes, its durable 30mm metal housing is specifically designed to withstand demanding industrial conditions, offering superior protection against impacts, vibrations, and contaminants.What type of contacts does the 440P-MSLS11B use?It is equipped with one normally closed (N.C.) and one normally open (N.O.) snap-acting contact, offering versatile switching capabilities for comprehensive safety circuits.

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PRODUCT DETAILS

Allen-Bradley 440P-MSLS11B

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

The Allen-Bradley 440P-MSLS11B safety limit switch is constructed with precision and durability:

  • Product Type: Safety Limit Switch
  • Catalog Number: 440P-MSLS11B
  • Housing Material: Metal
  • Actuator Type: Short Lever
  • Contacts: 1 N.C. (Normally Closed), 1 N.O. (Normally Open)
  • Contact Type: Snap Acting
  • Conduit Connection: M20

Applications

The adaptability and robust construction of the Allen-Bradley 440P-MSLS11B make it an excellent choice for various industrial safety applications, including:

  • Machine Guarding: Essential for monitoring the status of safety gates, access panels, and protective covers on machinery.
  • Safety Gate Interlocks: Provides critical feedback to control systems, preventing machine operation when safety barriers are open or improperly secured.
  • Position Sensing in Safety Circuits: Accurately detects the position of moving mechanical components within safety-related control frameworks.
  • Conveyor Systems: Utilized for emergency stop functions, product detection, or to confirm conveyor belt alignment.
  • Packaging Machinery: Enhances operator safety by monitoring various access points and machine conditions during packaging processes.
  • Compact & Restricted Space Installations: Ideally suited for mounting in tight areas where conventional larger actuators would not fit.

Why Choose the 440P-MSLS11B?

Uncompromised Safety

The 440P-MSLS11B is engineered with positive opening functionality and snap-acting contacts to deliver dependable, fail-safe performance in demanding safety environments.

Built to Last

Its sturdy 30mm metal housing ensures exceptional durability, safeguarding internal components from severe industrial contaminants and mechanical stress.

Optimized for Efficiency

The short lever actuator facilitates installation in compact machinery, reducing design limitations and streamlining integration into a broader range of equipment.

Availability & Shipping

  • In stock: 440P-MSLS11B 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 440P-MSLS11B ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

Its primary function is to provide precise position sensing within critical safety applications, ensuring the safety of personnel and equipment.

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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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

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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PALM Parts Solution sells used surplus products. PALM Parts Solution is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by PALM Parts Solution come with PALM Parts Solution's 1-Year Warranty and do not come with the original manufacturer's warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

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