Siemens SIRIUS 3RF24 Solid-State Contactors 3-Phase (10-50 A)

SIRIUS 3RF24 3-phase solid-state contactors with integrated heat sink, 2-phase or 3-phase controlled, ready for connection.

Key features

Type current 10 A to 50 A
Zero-point switching, rated operational voltage 48-600 V AC
2-phase or 3-phase controlled versions
Control supply voltage 4-30 V DC, 110 V AC or 230 V AC
Screw, spring-loaded or ring cable lug connection
10 A versions grounded via special mounting foot on DIN rail

Specifications

Brand	Siemens
Product line	SIRIUS 3RF24
Category	Solid-state contactor
Poles	3
Switching	Zero-point
Op. voltage	48-600 V AC
Heat sink	Integrated
Catalog chapter	6 - Soft starters and solid-state switching devices
Source	Siemens Catalog IC 10 · 2026, p. 588-589

3RF2410-1AB45		Type current: 10.5 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-1AB45		Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2430-1AB45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2440-1AB45		Type current: 40 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2450-1AB45		Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2410-1AB35		Type current: 10.5 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-1AB35		Type current: 20 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2430-1AB35		Type current: 30 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2440-1AB35		Type current: 40 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2450-1AB35		Type current: 50 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2410-1AB55		Type current: 10.5 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-1AB55		Type current: 20 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2430-1AB55		Type current: 30 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2440-1AB55		Type current: 40 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2450-1AB55		Type current: 50 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2410-1AC45		Type current: 10.5 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-1AC45		Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2430-1AC45		Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2440-1AC45		Type current: 40 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2450-1AC45		Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2410-1AC35		Type current: 10.5 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-1AC35		Type current: 20 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2430-1AC35		Type current: 30 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2440-1AC35		Type current: 40 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2450-1AC35		Type current: 50 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2410-1AC55		Type current: 10.5 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-1AC55		Type current: 20 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2430-1AC55		Type current: 30 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2440-1AC55		Type current: 40 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2450-1AC55		Type current: 50 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
3RF2410-2AB45		Type current: 10 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-2AB45		Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
3RF2410-2AB55		Type current: 10 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-2AB55		Type current: 20 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
3RF2410-2AC45		Type current: 10 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-2AC45		Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
3RF2410-2AC55		Type current: 10 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
3RF2420-2AC55		Type current: 20 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
3RF2450-3AB45		Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal
3RF2450-3AB55		Type current: 50 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal
3RF2450-3AC45		Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal
3RF2450-3AC55		Type current: 50 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal

Solid-State ContactorsSiemens

42 product codes available in this family

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Siemens SIRIUS 3RF24 Solid-State Contactors 3-Phase (10-50 A)

Brand Siemens·Solid-State Contactors

Available part numbers (42)

3RF2410-1AB45, 3RF2420-1AB45, 3RF2430-1AB45, 3RF2440-1AB45, 3RF2450-1AB45, 3RF2410-1AB35, 3RF2420-1AB35, 3RF2430-1AB35, 3RF2440-1AB35, 3RF2450-1AB35 + 32 more — see full table ↓

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Product codes & specifications

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RFQ List (0)

	Product code	Spec
	3RF2410-1AB45	Type current: 10.5 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-1AB45	Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2430-1AB45	Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2440-1AB45	Type current: 40 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2450-1AB45	Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2410-1AB35	Type current: 10.5 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-1AB35	Type current: 20 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2430-1AB35	Type current: 30 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2440-1AB35	Type current: 40 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2450-1AB35	Type current: 50 A \| Control supply: 110 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2410-1AB55	Type current: 10.5 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-1AB55	Type current: 20 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2430-1AB55	Type current: 30 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2440-1AB55	Type current: 40 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2450-1AB55	Type current: 50 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2410-1AC45	Type current: 10.5 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-1AC45	Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2430-1AC45	Type current: 30 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2440-1AC45	Type current: 40 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2450-1AC45	Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2410-1AC35	Type current: 10.5 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-1AC35	Type current: 20 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2430-1AC35	Type current: 30 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2440-1AC35	Type current: 40 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2450-1AC35	Type current: 50 A \| Control supply: 110 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2410-1AC55	Type current: 10.5 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-1AC55	Type current: 20 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2430-1AC55	Type current: 30 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2440-1AC55	Type current: 40 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2450-1AC55	Type current: 50 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Screw \| Grounding: Heat sink screw terminal
	3RF2410-2AB45	Type current: 10 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-2AB45	Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
	3RF2410-2AB55	Type current: 10 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-2AB55	Type current: 20 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
	3RF2410-2AC45	Type current: 10 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-2AC45	Type current: 20 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
	3RF2410-2AC55	Type current: 10 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: DIN rail snap-on (mounting foot)
	3RF2420-2AC55	Type current: 20 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Spring-loaded \| Grounding: Heat sink screw terminal
	3RF2450-3AB45	Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 2-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal
	3RF2450-3AB55	Type current: 50 A \| Control supply: 230 V AC \| Controlled: 2-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal
	3RF2450-3AC45	Type current: 50 A \| Control supply: 4-30 V DC \| Controlled: 3-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal
	3RF2450-3AC55	Type current: 50 A \| Control supply: 230 V AC \| Controlled: 3-phase \| Connection: Ring cable lug \| Grounding: Heat sink screw terminal

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Siemens SIRIUS 3RF24 Solid-State Contactors 3-Phase (10-50 A)