What is the Supco RO42 relay used for?

The Supco RO42 is a refrigeration relay designed for motor control and protection in HVAC cooling systems. It handles compressor motors rated 1/12 to 1/2 hp, making it ideal for small to mid-sized air conditioning and refrigeration units across commercial and industrial applications.

What are the specifications of the Supco RO42 relay?

The Supco RO42 relay operates at 115/230 VAC, accommodates motors from 1/12 to 1/2 hp, and belongs to the ICG/PO series. It provides reliable motor starting and overload protection for single-phase refrigeration compressors in HVAC equipment.

Where can I buy the Supco RO42 relay in Singapore?

3G Electric stocks the Supco RO42 relay (SKU: COP02007) and ships to Singapore with full DDP handling, customs clearance, and delivery logistics. Contact us for current availability and lead times for your HVAC equipment needs.

How do I install the Supco RO42 relay?

The RO42 mounts to the compressor terminal box following the wiring diagram in the product documentation. Ensure power is off during installation, verify voltage compatibility (115/230 VAC), and confirm proper terminal connections to the motor and start capacitor before energizing.

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Supco RO42 relay

Name: Supco RO42 relay
Brand: Supco
SKU: 3G-CBM-01262
Availability: BackOrder

Supco RO42 is a refrigeration relay for HVAC equipment, rated 1/12 to 1/2 hp at 115/230 VAC, part of the ICG/PO series. It provides motor control and protection for small to mid-sized cooling systems.

SKU 3G-CBM-01262

Brand

Supco

Item

RO42 relay

Technical Specifications

Supco

type

refrigeration relay 

series

ICG/PO 

hp rating

1/12 - 1/2 

voltage vac

115/230 

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Supco Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Used in

Common applications for Supco

Commercial refrigeration display cases — Supco RO82 relay and CSS-25U starter for compressor motor control without run capacitors

Medium-load HVAC systems — Supco SPP 6/SPP 8 hard-start devices to reduce compressor inrush current and extend motor lifespan

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Compressor thermal management — Universal Compressor Door for reducing shell temperature and improving efficiency in hot ambient conditions

Retrofit and field repairs — Supco controls with Quick Connect terminals for rapid installation in legacy refrigeration circuits

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3G Electric supplies Supco hvac equipment. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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