Product Overview
Line Electric HKH3A Plug-In Control Relays – Unused NOS, 2-Pack
This listing includes two Line Electric HKH3A general-purpose plug-in control relays with 12 VAC coils, 10 amp contact ratings, and a 3PDT contact configuration for industrial control-panel use.
Plug-in relays like the HKH3A were designed for cabinets where logic changes but wiring stays put. Extra poles meant flexibility, and low-voltage control coils made them easy to integrate into complex control schemes without reworking the panel.
Product Condition
Unused, new old stock in the manufacturer’s original packaging. The relays show no signs of installation or electrical service. Packaging exhibits minor wear consistent with long-term storage.
Product Overview
The Line Electric HKH3A is a general-purpose control relay intended for switching control-duty loads in automation, HVAC, and OEM machinery. Its plug-in format allows quick replacement using a compatible socket, minimizing downtime and avoiding disturbance of field wiring.
This 3PDT variant provides additional switching flexibility compared to common DPDT relays, making it suitable for interlocks, logic functions, and multi-circuit control tasks. It is not intended to serve as a power contactor.
Key Features
- Manufacturer: Line Electric
- Model: HKH3A
- Quantity: Two relays (2-pack)
- Relay type: General-purpose plug-in control relay
- Coil voltage: 12 VAC, 50/60 Hz
- Contact configuration: 3PDT
- Contact rating: 10 A (control-duty, resistive)
- Form factor: Plug-in body for use with compatible relay socket
Applications
- Industrial control panels and automation cabinets
- Low-voltage control and logic circuits
- HVAC control systems
- OEM machinery and equipment builds
- Interlock and sequencing circuits requiring multiple poles
- Maintenance spares for existing Line Electric installations
Frequently Asked Questions
Are these relays used or refurbished?
No. Both relays are unused new old stock and remain in the original manufacturer’s packaging.
What coil voltage do these relays require?
Each relay uses a 12 VAC control coil intended for standard low-voltage control circuits.
What does the 3PDT configuration provide?
3PDT means three independent poles with double-throw contacts, allowing multiple circuits to be switched simultaneously from a single control signal.
What does the 10 amp rating apply to?
The 10 A rating is typically specified for resistive control-duty loads. Inductive loads should be appropriately derated following standard control design practices.
Is a socket included?
No sockets are included. These relays are designed to mate with compatible Line Electric or equivalent plug-in relay sockets.
Kept together as a matched pair, these HKH3A relays were built to give control systems options. Their next assignment is waiting wherever low-voltage logic still runs the show.
