Siemens SIRIUS 3RF34 Solid-State Reversing Contactors (3.8-7.4 A)

SIRIUS 3RF34 3-pole solid-state reversing contactors for frequent reversing of three-phase motors up to 3 kW at 400 V.

Key features

Rated operational current 3.8 A, 5.4 A or 7.4 A (1.5-3 kW at 400 V)
Rated operational voltage 48-480 V AC
Instantaneous switching, 2-pole controlled
Control supply voltage 24 V DC or 110-230 V AC
Screw terminals

Specifications

Brand	Siemens
Product line	SIRIUS 3RF34
Category	Solid-state reversing contactor
Poles	3 (2-pole controlled)
Switching	Instantaneous
Op. voltage	48-480 V AC
Connection	Screw
Catalog chapter	6 - Soft starters and solid-state switching devices
Source	Siemens Catalog IC 10 · 2026, p. 613

3RF3403-1BD04		Rated current: 3.8 A \| Power 400 V: 1.5 kW \| Control supply: 24 V DC
3RF3405-1BD04		Rated current: 5.4 A \| Power 400 V: 2.2 kW \| Control supply: 24 V DC
3RF3410-1BD04		Rated current: 7.4 A \| Power 400 V: 3 kW \| Control supply: 24 V DC
3RF3403-1BD24		Rated current: 3.8 A \| Power 400 V: 1.5 kW \| Control supply: 110-230 V AC
3RF3405-1BD24		Rated current: 5.4 A \| Power 400 V: 2.2 kW \| Control supply: 110-230 V AC
3RF3410-1BD24		Rated current: 7.4 A \| Power 400 V: 3 kW \| Control supply: 110-230 V AC

Solid-State ContactorsSiemens

6 product codes available in this family

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Siemens SIRIUS 3RF34 Solid-State Reversing Contactors (3.8-7.4 A)

Brand Siemens·Solid-State Contactors

Available part numbers (6)

3RF3403-1BD04, 3RF3405-1BD04, 3RF3410-1BD04, 3RF3403-1BD24, 3RF3405-1BD24, 3RF3410-1BD24

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Product codes & specifications

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	Product code	Spec
	3RF3403-1BD04	Rated current: 3.8 A \| Power 400 V: 1.5 kW \| Control supply: 24 V DC
	3RF3405-1BD04	Rated current: 5.4 A \| Power 400 V: 2.2 kW \| Control supply: 24 V DC
	3RF3410-1BD04	Rated current: 7.4 A \| Power 400 V: 3 kW \| Control supply: 24 V DC
	3RF3403-1BD24	Rated current: 3.8 A \| Power 400 V: 1.5 kW \| Control supply: 110-230 V AC
	3RF3405-1BD24	Rated current: 5.4 A \| Power 400 V: 2.2 kW \| Control supply: 110-230 V AC
	3RF3410-1BD24	Rated current: 7.4 A \| Power 400 V: 3 kW \| Control supply: 110-230 V AC

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Siemens SIRIUS 3RF34 Solid-State Reversing Contactors (3.8-7.4 A)