700-K40E-B

Overview of Allen Bradley 700-K40E-B

The Allen Bradley 700-K40E-B is a miniature control relay engineered for industrial panel use. It features a compact design with a 4 pole, 4 normally open (NO) contact arrangement, supporting efficient signal switching and control. With a 440V AC coil (50 Hz) and 480V AC rating at 60 Hz, this relay is suitable for standard control systems requiring reliable operation at higher voltages. The device handles up to 10 amps and supports screw terminal connections, making it practical for straightforward wiring and fast installation on standard 35mm DIN rails. The 700-K40E-B stands out for its longevity—offering up to 300,000 operations—and optional top-mounted auxiliary contact blocks allow for flexibility in contact arrangement. Its robust performance and modularity make it a cost-effective solution for diverse switching applications in demanding environments.

Key Features of Allen Bradley 700-K40E-B

• 4 pole, 4 NO (normally open) contacts for versatile control
• Rated for 440V AC (50 Hz) and 480V AC (60 Hz) coil voltage
• 10A contact rating with silver bifurcated contacts for long life
• Screw terminal connections for secure wiring
• DIN rail mountable for quick panel integration
• Expandable configuration with up to four additional auxiliary contacts
• Compact dimensions: approx. 45mm W x 49mm D x 56mm H

Technical Specs of 700-K40E-B

• Brand: Allen Bradley
• Model: 700-K40E-B
• Contact Configuration: 4 NO (normally open) poles
• Coil Voltage: 440V AC 50 Hz / 480V AC 60 Hz
• Contact Rating: 10A
• Terminals: Screw
• Mounting: 35mm DIN rail
• Dimensions: 45mm(W) x 49mm(D) x 56mm(H)
• Conductor Size: 18–12 AWG
• Weight: 163 g
• Country of Origin: Switzerland

Applications / Use Case

The Allen Bradley 700-K40E-B is well-suited for industrial automation, machine building, and process control environments. It is commonly chosen for control panels where compact relays are needed to handle power switching, signaling, and logic interlocks. Facilities benefit from its reliable operation in applications requiring frequent cycling—such as motor starters, power distribution panels, and safety circuits. Thanks to its DIN rail mountable design and additional pole options, the 700-K40E-B streamlines panel layouts and facilitates fast field replacement. This model’s high voltage coil compatibility and extended mechanical lifespan help reduce maintenance, minimize downtime, and support seamless integration in both new and retrofit installations within manufacturing plants, utilities, and OEM equipment.

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