Allen-Bradley 700-K40E-KF General Purpose Relay | 4PDT, 10A, 300V, 24V DC Coil Specs

Allen-Bradley 700-K40E-KF General Purpose Relay | 4PDT, 10A, 300V, 24V DC Coil Specs

Allen-Bradley 700-K40E-KF general purpose relay specifications. 4PDT contacts, 10A @ 300V AC, 24V DC coil, UL Class B insulation, plug-in base. For industrial control and automation.

Product Overview

The Allen-Bradley 700-K40E-KF​ is a general purpose relay​ from the 700 series, designed for industrial control and automation applications. This model features 4PDT (4 Form C) contacts, 10A switching capacity at 300V AC, and a 24V DC coil. The "700" designation indicates the series, "K40E" specifies the contact configuration and coil voltage, and "KF" denotes the specific base and termination type. This relay provides reliable switching for control circuits, motor starters, and automation systems with its compact design and versatile mounting options.

Technical Specifications

Note: Specifications are based on Allen-Bradley 700 series technical documentation. The "700-K40E-KF" model specifically indicates 4PDT configuration, 24V DC coil, and plug-in base. Actual specifications may vary slightly depending on production batch.

Model Number Decoding (700-K40E-KF)

• 700:​ Series designation (700 general purpose relay series)

• K40E:​ Configuration code (K = contact configuration, 40 = 4PDT, E = 24V DC coil)

• KF:​ Base and termination type (KF = specific plug-in base with screw terminals)

Note:​ The "K40E" portion indicates 4PDT contact configuration (4 Form C) with 24V DC coil. The "KF" suffix specifies the plug-in base type with screw terminal connections. Other suffixes would indicate different base types or mounting options.

Key Features

• 4PDT Contact Configuration:​ Four normally open and four normally closed contacts for versatile switching applications

• High Switching Capacity:​ 10A @ 300V AC for robust industrial applications

• Plug-in Design:​ Easy installation and replacement without rewiring

• Dual Mounting:​ Panel mount or DIN rail mount options

• High Reliability:​ Mechanical life of 10 million operations minimum

• Wide Temperature Range:​ Operation from -40°C to +70°C

• Universal Applications:​ Suitable for AC and DC switching applications

• Status Indicator:​ Mechanical flag indicator for contact position

• Compact Design:​ Space-saving footprint for control panel applications

• Screw Terminals:​ Secure wire connections for reliable operation

• Gold Flashed Contacts:​ Enhanced performance for low-level switching

Typical Applications

• Industrial Control Panels:​ Motor control, contactor interlocks, and control circuit switching

• Automation Systems:​ PLC output modules, I/O interfacing, and signal conditioning

• Machine Tools:​ Control circuit switching for presses, lathes, and milling machines

• HVAC Systems:​ Control of fans, pumps, and heating elements

• Material Handling:​ Conveyor control, elevator systems, and sorting equipment

• Packaging Machinery:​ Control circuits for fillers, sealers, and labelers

• Process Control:​ Valve control, sensor interfacing, and alarm circuits

• Building Automation:​ Lighting control, access control, and security systems

• Test Equipment:​ Instrument switching and measurement circuits

Important Technical Notes

1. Coil Voltage:​ Verify power supply matches 24V DC coil rating. Do not exceed ±10% of rated voltage for reliable operation.

2. Contact Ratings:​ Ratings are for resistive loads. Derate for inductive or capacitive loads. Use appropriate suppression for inductive loads.

3. Mounting:​ Ensure proper mounting with adequate clearance for ventilation and maintenance access.

4. Wiring:​ Use proper wire size according to current rating. Follow torque specifications for screw terminals.

5. Contact Protection:​ For DC inductive loads, use freewheeling diodes. For AC inductive loads, use RC snubbers or varistors.

6. Switching Frequency:​ Do not exceed maximum switching frequency specified for the application. High frequency operation reduces contact life.

7. Environmental Conditions:​ Protect from excessive dust, moisture, and corrosive atmospheres unless specifically rated for such environments.

8. Maintenance:​ Periodically check contacts for wear, pitting, or contamination. Clean contacts if necessary using appropriate contact cleaner.

9. Replacement:​ When replacing, ensure new relay has identical specifications and mounting configuration.

Note: For complete installation guidelines, wiring diagrams, application notes, and detailed technical data, consult the official Allen-Bradley 700 Series Technical Manual. Always verify the exact model number configuration with the manufacturer, as notation variations may occur.