Siemens SIRIUS 3RF22 Solid-State Relays 3-Phase 45 mm (30-55 A)

SIRIUS 3RF22 3-phase solid-state relays in 45 mm width for mounting on a separate heat sink, 2-phase or 3-phase controlled.

Key features

Type current 30 A or 55 A
Zero-point switching, rated operational voltage 48-600 V AC
2-phase or 3-phase controlled versions
Control supply voltage 110 V AC or 4-30 V DC
Screw, spring-loaded or ring cable lug connection

Specifications

Brand	Siemens
Product line	SIRIUS 3RF22
Category	Solid-state relay
Poles	3
Width	45 mm
Switching	Zero-point
Op. voltage	48-600 V AC
Heat sink	Not included
Catalog chapter	6 - Soft starters and solid-state switching devices
Source	Siemens Catalog IC 10 · 2026, p. 584

3RF2230-1AB35		Type current: 30 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw
3RF2255-1AB35		Type current: 55 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw
3RF2230-1AB45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw
3RF2255-1AB45		Type current: 55 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw
3RF2230-1AC35		Type current: 30 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw
3RF2255-1AC35		Type current: 55 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw
3RF2230-1AC45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw
3RF2255-1AC45		Type current: 55 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw
3RF2230-2AB45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Spring-loaded
3RF2255-2AB45		Type current: 55 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Spring-loaded
3RF2230-2AC45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Spring-loaded
3RF2255-2AC45		Type current: 55 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Spring-loaded
3RF2230-3AB45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Ring cable lug
3RF2255-3AB45		Type current: 55 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Ring cable lug
3RF2230-3AC45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Ring cable lug
3RF2255-3AC45		Type current: 55 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Ring cable lug

Solid-State ContactorsSiemens

16 product codes available in this family

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Siemens SIRIUS 3RF22 Solid-State Relays 3-Phase 45 mm (30-55 A)

Brand Siemens·Solid-State Contactors

Available part numbers (16)

3RF2230-1AB35, 3RF2255-1AB35, 3RF2230-1AB45, 3RF2255-1AB45, 3RF2230-1AC35, 3RF2255-1AC35, 3RF2230-1AC45, 3RF2255-1AC45, 3RF2230-2AB45, 3RF2255-2AB45 + 6 more — see full table ↓

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Siemens SIRIUS 3RF22 Solid-State Relays 3-Phase 45 mm (30-55 A)