RELAY OVERLOAD COMBO

The Supco Relay Overload Combo (RO22, RO42, RO62, RO82) is a fair dinkum, no-nonsense way to keep your refrigerant motors running cool and safe. Designed for licensed HVAC & refrigeration techs, apprentices, and contractors, it snaps on quick, stops wasted starts, and lets you crack on with the job faster.

Key Features & Benefits

• Pre-wired relay + overload combo: Cuts install time—get in, snap on, and back into the job faster.
• Works with or without start capacitors: One product that handles multiple compressor setups—no guesswork.
• Locked-rotor protection: Prevents start winding burnout—less call-backs, more reliable gear.
• Snap-on bracket: Easy to mount—even when you're up on a roof in 40°C, it's a bloody good hassle saver.
• UL Recognised: Builds trust with safety standards—important for compliance in Aussie jobs.

Why This Product Matters

When you're up on a hot rooftop in Brisbane or battling Sydney's humidity, gear that works first-time makes all the difference. The RO Series is dead-set reliable—whether you're switching out failed start caps or upgrading old relays, it’s a ripper for avoiding repeat visits. You can check out our full relay overload range to match the right HP spec for your system.

Pro Tip

Always isolate power and allow the compressor to cool before snapping on the new relay/overload—this avoids mis-trip heat-soak issues and ensures your new unit seats properly. Saves time and drama on site.

Compatibility & System Info

Works with 230 VAC single-phase refrigeration compressors rated:

• RO22 – ½ HP
• RO42 – ¼ to ⅓ HP
• RO62 – 1⁄6 to 1⁄5 HP
• RO82 – 1⁄12 to 1⁄8 HP

Compatible with systems using or lacking start capacitors. Ideal for R32, R410A, R134a setups commonly used across Australia.

Local Trade Context

From humid Darwin jobs to chilly Tasmanian installs, the Supco RO Series has got you covered—no worries, these units hold up across Aussie climates and jobsite heat.

What’s Included

• 1 × Supco Relay Overload Combo (RO22, RO42, RO62 or RO82 as selected)
• Built-in snap-on mounting bracket
• Factory-pre-wired terminals for quick connect

Specifications

Model	HP Rating	Voltage	Mount
RO22	½ HP	230 VAC	Snap-on bracket
RO42	¼–⅓ HP	230 VAC	Snap-on bracket
RO62	1⁄6–1⁄5 HP	230 VAC	Snap-on bracket
RO82	1⁄12–1⁄8 HP	230 VAC	Snap-on bracket

Warranty & Returns

Backed by manufacturer’s standard warranty for peace of mind. Returns accepted within 30 days if unused and in original packaging—she’ll be right if you need to swap.

FAQs

• Which RO model do I choose? Select based on compressor HP or running amps. Need help? Chat with us or visit our relay combos category.
• Safe to use without start capacitor? Absolutely—all RO Series units work either way.
• What if I’m not sure of voltage? All models run on 230 VAC single-phase—standard for Aussie residential and light commercial systems.

Related Products

Pair this with a reliable digital manifold gauge for quick diagnostics and proper start-cap checks.