Allen-Bradley 700-HF32Z24 Miniature Square Base Relay

Allen-Bradley 700-HF32Z24 Miniature Square Base Relay

Configured for control circuit switching and electrical isolation in Bulletin 700-HF relay assemblies, the Allen-Bradley 700-HF32Z24 (700-HF32Z24 miniature square base relay) provides DPDT contact operation from a 24 VDC coil. The relay uses AgNi contacts, an 8-pin plug-in blade base, LED indication, and a mechanical flag indicator.

Hardware Specifications

Allen-Bradley Relay Contact and Isolation Characteristics

The 700-HF32Z24 provides two changeover contact sets for discrete control circuit switching. Its 24 VDC coil separates the control-side actuation circuit from the switched contact circuit.

The AgNi contact material supports the specified resistive switching rating of 10 A at 250 VAC or 30 VDC. However, load type and inrush characteristics must remain within the applicable relay contact limits.

The 2,000 VAC dielectric strength applies between the coil and contacts. Therefore, wiring must maintain the required separation between coil conductors and switched-load conductors.

The transparent housing permits visual inspection of relay status. Additionally, the mechanical flag provides a direct indication of the relay operating position, while the LED provides electrical status indication.

Frequently Asked Questions (FAQ)

Q: What coil voltage does the 700-HF32Z24 require?
A: The specified coil voltage is 24 VDC.

Q: What contact configuration does this relay provide?
A: The relay provides DPDT contacts, corresponding to two Form C changeover contact sets.

Q: Which sockets are specified for this relay?
A: The supplied data identifies Allen-Bradley 700-HN121 and 700-HN122 as compatible sockets.

Field Installation Guidelines

Install the relay using the specified 8-pin plug-in socket and verify that the socket terminals match the intended wiring diagram.

Confirm the control circuit provides 24 VDC at the relay coil terminals before energizing the assembly.

Keep coil wiring separated from high-current or high-noise conductors where practical to reduce unwanted electrical coupling.

Route switched-load wiring according to the applicable panel wiring practices and maintain appropriate conductor insulation and terminal clearances.

For shielded signal cables installed near the relay assembly, terminate shields according to the system grounding design rather than using the relay contacts as grounding points.

Verify that the connected load does not exceed the specified resistive contact rating. Loads with substantial inrush, inductive behavior, or switching transients require separate assessment.

Before commissioning, verify relay insertion, socket engagement, contact continuity, coil polarity requirements, LED operation, and mechanical flag movement.