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Siemens 3RT2017-2SB42 SIRIUS Contactor, 24 VDC Coil

Name: 3RT2017-2SB42
Brand: Siemens
SKU: 3RT2017-2SB42
Availability: LimitedAvailability
Author: Old Mike

MPN3RT2017-2SB42

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Siemens SIRIUS 3RT2017-2SB42 coupling contactor, size S00, 24 VDC coil, spring-type terminals, 45 x 70 x 73 mm, screw and snap-on mounting onto 35 mm DIN rail.

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Siemens 3RT2017-2SB42 datasheet (PDF)

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Specifications

Identification

3RT2017-2SB42 — Identification
Parameter	Value
Contactor frame size	S00

Ratings & Performance

3RT2017-2SB42 — Ratings & Performance
Parameter	Value
Rated operational current, AC-12, max.	10 A
Rated operational current, AC-4 @ 400 V	8.5 A
Rated value @ 400 V	3 A
Rated value @ 500 V	2 A
Rated value @ 690 V	1 A
Rated value @ 230 V	2 hp
Rated value @ 24 V	10 A
Rated value @ 60 V	2 A
Rated value @ 110 V	1 A
Rated value @ 220 V	0.3 A

Control & Coil

3RT2017-2SB42 — Control & Coil
Parameter	Value
Control supply voltage type	DC

Contacts & Poles

3RT2017-2SB42 — Contacts & Poles
Parameter	Value
Main poles	3
Main NO contacts	3
Auxiliary contact reliability	1 faulty switching per 100 million (17 V, 1 mA)

Protection & Coordination

3RT2017-2SB42 — Protection & Coordination
Parameter	Value
Short-circuit coordination type 1, fuse	gG: 50A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)
Short-circuit coordination type 2, fuse	gG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA)
Aux. switch short-circuit protection, fuse	gG: 10 A (500 V, 1 kA)

Connection & Mounting

3RT2017-2SB42 — Connection & Mounting
Parameter	Value
Main circuit connection	spring-loaded terminals
Aux. / control circuit connection	spring-loaded terminals
Conductor cross-section, solid	0.5 ... 4 mm²
Conductor cross-section, solid or stranded	2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule	2x (0.5 ... 2.5 mm²)
Mounting method	screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mounting	Yes

Durability

3RT2017-2SB42 — Durability
Parameter	Value
Durability (operating cycles, typ.)	30 000 000

Environmental

3RT2017-2SB42 — Environmental
Parameter	Value
Operating temperature range	-25 ... +60 °C
Storage temperature range	-55 ... +80 °C
Installation altitude, max.	2 000 m

Mechanical

3RT2017-2SB42 — Mechanical
Parameter	Value
Width	45 mm
Height	70 mm
Depth	73 mm

Product details

DC switching capacity and coil characteristics

The 3RT2017-2SB42: The 24 VDC coil has a pickup range of 0.85 to 1.85 times rated value, meaning it reliably pulls in at 20.4 V and stays sealed up to 44.4 V.

Switching frequency and mechanical endurance

Maximum switching rates are 1000 cycles/hour for AC-1 resistive loads, 750 cycles/hour for AC-2 and AC-3 motor loads, and 250 cycles/hour for AC-4 plugging/inching duty.

Panel fit and clearance requirements

Dimensions are 45 mm wide, 70 mm tall, and 73 mm deep — the S00 frame fits tightly in a crowded DIN rail section.

Frequently asked questions

What is the 3RT2017-2SB42 used for?

It's a SIRIUS coupling contactor in size S00, typically used for switching DC loads like solenoids, brake coils, and small motors in control panels. The 24 VDC coil makes it suitable for PLC-controlled systems.

MPN

3RT2017-2SB42