700-HK32A1-4

Configured for high-density control signal isolation and load switching in industrial control panels, the Allen-Bradley 700-HK32A1-4 (700-HK32A1 GP Slim Line Relay) provides direct physical/electrical execution. Operating on a 120 VAC actuation circuit at 50/60 Hz, this general-purpose relay features a DPDT (2 Changeover) contact configuration with an 8 A continuous current rating. The module integrates plug-in blade-style terminals for socket mounting and includes a visual LED pilot light indicator for real-time coil actuation monitoring.

Suffix Breakdown & Model Matrix

Model Code	Base Family	Contact Configuration	Coil Voltage	Features
700-HK32A1-4	700-H Slim Line Series	DPDT (2 C/O), 8 A Rating	120 VAC, 50/60 Hz	LED Pilot Light, Plug-in Terminals

Hardware Specifications

Parameter	Specification
Model	700-HK32A1-4
Brand	Allen-Bradley
Origin	USA
Weight	0.05 lbs
Operating Temp	-40 deg C to +70 deg C
Power Consumption	Standard 120 VAC Coil Power
Contact Configuration	DPDT (2 Changeover Contacts)
Contact Rating	8 A
Actuating Voltage	120 VAC (50/60 Hz)
Contact Material	Silver Nickel (AgNi)
Terminal Type	Plug-in Blade-Style Terminals
Status Indicator	Visual LED Pilot Light
Degree of Protection	IP20
Mechanical Shock Limit	15 g

Backplane Bus Communication Velocity & Network Integrity

Within Allen-Bradley control architectures, interposing relays like the 700-HK32A1-4 provide critical galvanic isolation between logic controllers and high-power field actuators. In high-density PLC I/O applications connected via EtherNet/IP deterministic networks, switching inductive loads directly through PLC output modules can introduce electrical noise and backplane communication jitter. Interposing the 700-HK32A1-4 prevents backplane noise coupling, ensuring deterministic network update rates and maintaining backplane bus communication velocity across distributed CompactLogix and ControlLogix rack assemblies.

Frequently Asked Questions

Q: Can the 700-HK32A1-4 relay be plugged or unplugged while the control system is energized?

A: Hot-swapping the relay unit from its mounting socket while under load is not recommended due to potential arc flash and contact pitting. Always isolate the 120 VAC coil circuit and load voltage source before replacing the relay cartridge.

Q: What is the purpose of the Silver Nickel contact material in this relay module?

A: Silver Nickel (AgNi) contacts provide high resistance to contact welding and low erosion under repetitive 8 A resistive switching cycles, maintaining stable contact resistance over extended operational lifecycles.

Field Installation Guidelines

1. Ensure the mounting socket is securely latched onto the standard 35 mm DIN-rail prior to inserting the relay module.
2. Align the plug-in blade-style terminals with the socket receptacle and press firmly until the mechanical retaining clip fully engages.
3. Verify that 120 VAC coil wiring and contact switching conductors are wired according to terminal markings on the socket body.
4. Maintain proper conductor bending radius and apply recommended torque specifications to screw terminals to prevent mechanical stress on internal contact blades.
5. Verify that the integrated LED pilot light illuminates when 120 VAC power is applied across the coil input terminals.

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