Short starter relays for refrigerator & freezer compressors. SF series, 1/8–1/2 HP, sealed voltage relay, 110V/220V. OEM & ODM. Free samples.
Short starter relay for single-phase refrigeration compressors. SF series current-type relay with sealed construction, available for 1/8 HP to 1/2 HP. Operates on 110V/220V, 50/60Hz. Provides reliable motor starting by switching the start winding based on current draw. Compact plug-on design for refrigerator, freezer and water cooler compressors. OEM support.
| Parameter | Details |
|---|---|
| Product Type | Short Starter Relay (Current Type) |
| Series | SF Series |
| Relay Type | Current relay / Voltage relay |
| Applicable Power | 1/8 HP, 1/6 HP, 1/5 HP, 1/4 HP, 1/3 HP, 1/2 HP |
| Voltage | 110V / 220V AC |
| Frequency | 50/60 Hz |
| Contact Arrangement | Normally open (NO), single pole |
| Construction | Sealed, dust-resistant |
| Mounting | Plug-on type for compressor terminals |
| Operating Temperature | -40°C to +70°C |
| Contact Material | Silver alloy |
| Electrical Life | Up to 1,000,000 cycles |
| Compatible Refrigerants | R134a, R600a, R22, R404A |
| Application | Refrigerator, freezer, water cooler, vending machine |
Reliable Compressor Starting – The SF series short starter relay provides reliable motor starting for single-phase refrigeration compressors. The current-type design switches the start winding based on the compressor’s current draw, ensuring consistent starting even under low-torque conditions typical of capillary tube systems.
Sealed Construction – Fully sealed housing protects the relay mechanism from dust, moisture, and contaminants, extending service life in humid refrigeration environments. Suitable for use with flammable refrigerants such as R600a.
Wide Power Coverage – Available from 1/8 HP to 1/2 HP, covering the full range of fractional horsepower compressors used in domestic refrigerators, freezers, water coolers, and vending machines.
Plug-On Design for Easy Installation – The relay is designed to plug directly onto the compressor terminals, eliminating the need for complex wiring and reducing assembly time on the production line.
Compact & Space-Saving – Short, compact body fits tight compressor terminal enclosures, suitable for compact refrigeration systems where space is limited.
Multiple Voltage Options – Available in 110V and 220V versions, compatible with domestic and international power supplies.
Stable Bulk Supply – Standard models ship in 15–25 days, supporting rolling replenishment and reducing inventory capital occupation.
OEM & ODM Support – Custom logo, packaging, voltage, and terminal type available. Can produce according to customer specifications.
Batch Traceability – MTC with every shipment; SGS/BV third-party inspection supported.
Export Packaging – Seaworthy carton and pallet packaging, suitable for long-distance ocean shipping.
For technical datasheets, samples, or bulk pricing, contact us directly.
Send your specifications (HP, voltage, terminal type) for a free technical evaluation and quotation within 24 hours. OEM and ODM orders welcome.
