Allen-Bradley 700-HB33A1 General Purpose Relays

Configured for high-current switching control in Allen-Bradley motor control and automation assemblies, the Allen-Bradley 700-HB33A1 (700-HB General Purpose Relay) provides direct physical/electrical execution. Operating as a heavy-duty industrial switching interface, this unit routes up to 15 A across 3PDT contacts to control auxiliary loads, solenoid valves, and interlock circuits directly triggered by a 120 VAC control loop.

Suffix Breakdown & Model Matrix

The catalog number 700-HB33A1 defines the mechanical construction, contact arrangement, and coil voltage parameters within the Allen-Bradley 700-HB general purpose relay line:

Hardware Specifications

Firmware Flash Compatibility & Control Loop Integration

Engineered for seamless integration into 120 VAC industrial control systems, the 700-HB33A1 utilizes heavy-duty blade-style contacts to eliminate wiring bottlenecks and ensure stable electrical contact resistance. The high magnetic pickup response time maintains tight execution speed during PLC digital output triggering cycles. Internal arc-suppression clearances and structural dielectric isolation prevent voltage flashover between adjacent poles, preserving signal separation across dense I/O wiring panels and relay interface racks.

Frequently Asked Questions

Q: What is the maximum continuous current capacity per pole for the 700-HB33A1 relay?

A: Each pole of the 3PDT contact set is rated to switch and carry up to 15 A continuous resistive current at rated system voltages.

Q: Does the 700-HB33A1 include a visual status indicator for coil energization?

A: Yes. The unit features an integrated mechanical/LED ON/OFF indicator that visually displays coil excitation status during live panel operations.

Q: Can the 700-HB33A1 be plugged into standard square-base relay sockets?

A: Yes. The relay utilizes standard square-base blade-style terminals designed to mate directly with matching 11-blade square-base DIN-rail socket assemblies.

Field Installation Guidelines

1. De-energize all power sources feeding the control panel and socket terminals prior to installation or inspection.
2. Align the blade-style pins of the 700-HB33A1 with the mating slots of the panel-mounted square-base socket.
3. Push the relay firmly into the socket until the unit seats completely against the base receptacle.
4. Secure the relay using a compatible retaining clip (if installed) to prevent loose seating caused by mechanical vibration.
5. Ensure field wiring connected to the socket terminals uses correctly sized wire gauges rated for 15 A load currents in compliance with local electrical codes.