Siemens 3rf2230-1ab45 Solid State Relay 30A 3 Phase

Product Description

The SIEMENS 3rf2230-1ab45 is a 3-phase solid state relay (SSR) from the 3RF2 series, designed for switching AC loads in industrial power control applications. Rated at 30 amps with a load voltage range of 48 to 600 volts AC and a DC control input of 4 to 30 volts, this relay provides reliable, contact-free switching without mechanical wear. The blocking voltage is rated at 1200 volts, offering headroom for transient protection. Screw-type terminals simplify field wiring. Licensed electricians and industrial controls technicians are the primary installers of this device in panel and machine control environments.

This relay suits 3-phase motor control, heating element switching, and industrial automation panels where silent, maintenance-free operation is required. It operates with 2-phase control logic and is housed in a compact DIN-rail-compatible form factor. Applications span commercial and light industrial environments where a low-voltage DC signal must switch a higher-voltage 3-phase AC load without relay chatter or contact degradation.

Key Features

• 30 amp continuous load current rating
• Load voltage range: 48 to 600 volts AC
• Control input: 4 to 30 volts DC, 2-phase controlled
• Blocking voltage rated at 1200 volts for transient tolerance
• Screw-type terminals for secure, field-serviceable wiring
• 3-phase switching with no moving contacts for long service life

Compatibility

Designed as an OEM and replacement solid state relay for 3-phase industrial control panels and machine automation systems requiring a 4-30 V DC input signal and 48-600 V AC load switching capacity.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements and applicable local codes. De-energize and lock out the panel before removing or installing the relay. Solid state relays generate heat under load — verify that adequate thermal management, such as a heat sink or forced-air cooling, is in place before commissioning. Do not exceed the rated load current or blocking voltage.