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Allen-Bradley 440R-M23143
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 440R-M23143 Guardmaster Safety Relay Module is a vital element for upholding top safety standards in demanding industrial settings. Crafted by the esteemed Allen-Bradley brand, this safety relay offers a crucial solution for overseeing dangerous areas, averting industrial incidents, and cultivating a secure work environment. As an integral part of the distinguished Guardmaster series, the 440R-M23143 guarantees that your operations adhere to rigorous safety mandates while simultaneously minimizing potential downtime and maximizing operational efficiency.Engineered for simple incorporation, the 440R-M23143 connects easily with various safety sensors and equipment, facilitating real-time oversight and precise system regulation. Its capability to handle diverse safety functions makes it perfect for applications demanding the highest levels of safety performance, specifically PL e / SIL 3. This certification highlights its appropriateness for essential safety systems, providing assurance and strong protection for both personnel and machinery. Opt for the 440R-M23143 to strengthen your industrial automation systems with unmatched safety, dependability, and conformity. This module is more than just a component; it signifies a pledge to a safer, more productive operational future.Key Features Superior Safety Monitoring: Delivers continuous, dependable oversight for crucial industrial machinery and high-risk zones. PL e / SIL 3 Performance: Attains the pinnacle of safety performance levels, ensuring adherence for the most rigorous uses. Flexible System Integration: Compatible with a broad range of safety sensors and devices for adaptable system configurations. Rugged Industrial Design: Built to endure the harsh conditions of industrial environments, ensuring lasting resilience. Regulatory Compliance: Supports conformance to vital safety protocols across various sectors, from production to automation. Optimized Uptime: Boosts system dependability, leading to reduced interruptions and improved operational output. Compact DIN Rail Mount: Allows for straightforward installation and efficient use of space within control panels. Technical Specifications Model: 440R-M23143 (MSR138DP) Type: Safety Relay Module Safety Rating: PL e / SIL 3 Input Voltage: 24V DC Number of Inputs: 4 Number of Outputs: 2 Mounting Type: DIN Rail Mount Operating Temperature: -20°C to 55°C Weight: 0.6 lbs (0.27 kg) Certifications: UL, CE, RoHS Applications Industrial automation systems that require the highest level of safety integrity. Safety oversight in settings with hazardous equipment, robotics, or procedures. Integration into emergency stop systems and other critical control applications. Manufacturing plants needing strict adherence to occupational safety rules. Processing sites where machine guarding and access control are essential. Automotive assembly lines utilizing intricate and potentially dangerous machinery. Why Choose?Uncompromised Safety: Provides robust and dependable safeguarding, making hazardous environments safer for both personnel and equipment.Industry-Leading Standards: Meets global PL e / SIL 3 safety classifications, guaranteeing your operations comply with the most stringent regulations.Seamless Compatibility: Engineered for effortless integration into both existing and new safety circuits, simplifying installation.Built to Last: Its robust construction ensures long-term durability and consistent operation, even in the most demanding industrial environments.Trusted Brand Quality: Benefit from the renowned dependability and engineering excellence synonymous with Allen-Bradley Guardmaster products.Immediate Availability: Readily available from USA stock, ensuring fast delivery and reduced lead times for your critical projects.Order NowUpgrade your industrial safety protocols with the Allen-Bradley 440R-M23143 Guardmaster Safety Relay Module. Experience the confidence that comes with superior protection and compliance. ✅ USA Stock: Ready for immediate shipment.FAQWhat is the primary function of the Allen-Bradley 440R-M23143 Guardmaster Safety Relay?Its primary role is to monitor hazardous areas in industrial environments, preventing accidents and ensuring a secure workplace by interfacing with various safety sensors and devices.What safety performance level does this module achieve?The 440R-M23143 is designed to achieve PL e / SIL 3, which represents the highest safety performance levels for critical safety systems.Is the 440R-M23143 compatible with existing safety systems?Yes, it is engineered for flexible system integration and compatible with a wide array of safety sensors and devices, allowing for versatile system design and seamless incorporation into existing setups.What industries typically use this safety relay?It is widely used in industrial automation, manufacturing facilities, processing plants, and automotive assembly lines, particularly where hazardous machinery, robotics, and strict occupational safety regulations are in place.How does this safety relay contribute to operational efficiency?By enhancing system reliability and minimizing potential downtime through its continuous safety monitoring and robust design, it helps maximize operational output and efficiency.
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Allen-Bradley 440R-M23143
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:
- Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- 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-M23143 (MSR138DP)
- Type: Safety Relay Module
- Safety Rating: PL e / SIL 3
- Input Voltage: 24V DC
- Number of Inputs: 4
- Number of Outputs: 2
- Mounting Type: DIN Rail Mount
- Operating Temperature: -20°C to 55°C
- Weight: 0.6 lbs (0.27 kg)
- Certifications: UL, CE, RoHS
Applications
- Industrial automation systems that require the highest level of safety integrity.
- Safety oversight in settings with hazardous equipment, robotics, or procedures.
- Integration into emergency stop systems and other critical control applications.
- Manufacturing plants needing strict adherence to occupational safety rules.
- Processing sites where machine guarding and access control are essential.
- Automotive assembly lines utilizing intricate and potentially dangerous machinery.
Why Choose the 440R-M23143?
Uncompromised Safety: Provides robust and dependable safeguarding, making hazardous environments safer for both personnel and equipment.
Industry-Leading Standards: Meets global PL e / SIL 3 safety classifications, guaranteeing your operations comply with the most stringent regulations.
Seamless Compatibility: Engineered for effortless integration into both existing and new safety circuits, simplifying installation.
Built to Last: Its robust construction ensures long-term durability and consistent operation, even in the most demanding industrial environments.
Trusted Brand Quality: Benefit from the renowned dependability and engineering excellence synonymous with Allen-Bradley Guardmaster products.
Immediate Availability: Readily available from USA stock, ensuring fast delivery and reduced lead times for your critical projects.
Availability & Shipping
- ▸In stock: 440R-M23143 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-M23143 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Allen-Bradley
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.
Related Allen-Bradley resources
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Independent Supplier Notice
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.