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3G Electric
Supco RO42 relay - HVAC Equipment
SupcoHVAC Equipment

Supco RO42 relay

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
Category
HVAC Equipment
UNSPSC
40101709 — Air handling unit
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Supco
type
refrigeration relay
series
ICG/PO
hp rating
1/12 - 1/2
voltage vac
115/230

Technical Documents

(1)
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Supco Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

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.

Frequently Asked Questions

What is the Supco RO42 relay used for?

The Supco RO42 is a refrigeration relay used in HVAC equipment for motor control and protection. It is designed for refrigeration systems without run capacitors, replacing current-type relays in compressors from 1/4 to 1/3 hp at 230 VAC. It provides locked rotor protection to prevent start winding overheating.

What are the specifications of the Supco RO42 relay?

The Supco RO42 relay is rated for 1/4 to 1/3 hp at 230 VAC. It is part of the RO series with a quick-connect mounting and features a snap-on bracket. It provides locked rotor protection and can be used with or without a start capacitor for refrigeration systems without run capacitors.

Where to buy the Supco RO42 relay in Singapore?

You can source the Supco RO42 relay through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this refrigeration relay for HVAC motor control applications.

How to install the Supco RO42 relay?

To install the Supco RO42 relay, ensure power is off. Mount it using the snap-on bracket or quick-connect terminals per the compressor wiring diagram. The RO series is pre-wired for fast installation. Verify voltage compatibility at 230 VAC and secure all connections before restoring power.

Used in

Common applications for Supco
Commercial refrigeration maintenance — Supco SL5709 defrost thermostat for Larkin evaporator coils
HVAC system troubleshooting — Supco IG418 universal hot surface igniter for gas furnace replacement
Condensate management in negative pressure systems — Supco NPW1H drain trap for rooftop units
Temperature and sound logging in cold storage — Supco CR4 circular chart recorder for compliance documentation
Compressor protection in light industrial cooling — Supco CSS-25U hard-start device for inrush current control
Safety limit control in heating appliances — Supco SHM350 surface-mount limit control for over-temperature shutdown
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Supco Products

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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