440K-E33077

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Overview of Allen Bradley 440K-E33077

The Allen Bradley 440K-E33077 Guardmaster Elf Tongue Interlock Switch is a highly reliable safety device designed for industrial applications requiring secure guard locking and monitoring. Engineered to fit on sliding, hinged, or lift-off guards, this tongue-operated interlock switch ensures safe access control by preventing machine operation while guards are open. It features a rugged construction with UL-approved glass-filled PBT housing and a stainless steel actuator, built to withstand harsh environments. Its compact design and compliance with safety standards make it ideal for integrating into automated safety systems for manufacturing facilities, packaging lines, and material handling setups. The 440K-E33077 supports straightforward installation and reliable operation under a wide temperature range of -20 to 80 °C, reflecting its suitability for diverse industrial conditions.

Key Features of Allen Bradley 440K-E33077

  • Heavy-duty glass-filled PBT housing with stainless steel actuator for enhanced durability
  • Tongue-operated interlock switch for sliding, hinged, and lift-off guards
  • Rated for 10 A thermal current with contact ratings up to A600/AC-15 and N150/DC13
  • 4-pin DC Micro quick disconnect (M12) connection for easy integration
  • Ingress protection rating IP67, suitable for washdown and harsh industrial environments
  • Operating temperature range from -20 °C to +80 °C for flexible use
  • Mechanical life rated for up to 1,000,000 operations ensuring long service intervals
  • Includes one normally closed (N.C.) direct opening safety contact and one normally open (N.O.) auxiliary contact
  • Torque settings optimized for secure mounting: 1.4 N•m for bolts, 1.2 N•m for lid screws

Technical Specs of 440K-E33077

Specification Details
Housing Material UL approved glass-filled PBT
Actuator Material Stainless steel
Contact Configuration 1 N.C. direct opening safety contact, 1 N.O. auxiliary contact
Thermal Current Rating 10 A
Electrical Ratings A600/AC-15 240V/3 A, 120V/6 A, N150/DC13 24V/2 A
Connector 4-pin DC Micro QD (M12)
Ingress Protection IP67
Operating Temperature -20 to 80 °C (-4 to 176 °F)
Mechanical Life 1,000,000 operations
Mounting Torque 1.4 N·m for mounting bolts; 1.2 N·m for lid screws

Applications / Use Case

The Allen Bradley 440K-E33077 is ideally suited for industrial safety applications where controlled access to machinery guards is critical. It is commonly used in manufacturing plants, packaging equipment, and conveyor systems where it ensures operator safety by disabling machinery when guards are opened or removed. This interlock switch prevents accidental machine starts during maintenance or cleaning operations, supporting compliance with safety standards such as ISO 14119 and IEC 60947-5-3. Its compact size and robust ingress protection allow use in food processing and chemical industries, even in washdown conditions. Integrators use it to build safety circuits in automated production lines, helping to reduce downtime and protect personnel without compromising operational efficiency.

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440K-E33077

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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