Skip to main content
Siemens 3RT2017-2KB42-1LA0 — Contactors

Siemens SIRIUS 3RT2017-2KB42-1LA0 Contactor, Size S00, 24 VD

MPN3RT2017-2KB42-1LA0
Active

Siemens SIRIUS 3RT2017-2KB42-1LA0, Size S00 contactor, 24 VDC coil, spring-type terminals, 45 mm wide.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT2017-2KB42-1LA0 — Identification
ParameterValue
Contactor frame sizeS00
3RT2017-2KB42-1LA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V8.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V2 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2017-2KB42-1LA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2017-2KB42-1LA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT2017-2KB42-1LA0 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 50A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)
Short-circuit coordination type 2, fusegG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2017-2KB42-1LA0 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2017-2KB42-1LA0 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2017-2KB42-1LA0 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2017-2KB42-1LA0 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth121 mm

Product details

It is part of the SIRIUS family, a broad platform for industrial switching and protection. The coil termination uses spring-type terminals, which means no screwdriver is needed for the control wiring — a time-saver during panel build and a reliable connection that won't loosen under vibration. This is the standard mounting for panel builders; the 45 mm width fits a single modular device pitch.

For DC switching, the contactor is rated 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 3 A at 400 V, and 2 A at 500 V and 690 V. These are the make-and-break capacities for DC loads — the current drops as voltage rises because DC arcs are harder to extinguish. The 10 A at 24 VDC is the figure that matters for most control-circuit or small DC-motor applications. For AC loads, the contactor is rated 11 A at 480 V and 600 V, and 2 hp at 230 V. The 11 A at 480 V is the general-purpose rating for three-phase motor switching in North American 480 V panels; the 2 hp at 230 V covers single-phase motor duty. Electrical life depends on the load type and switching frequency; for high-cycle applications like conveyors, derate accordingly.

Dimensions are 45 mm wide, 70 mm high, and 121 mm deep. These are the minimum air gaps needed for heat dissipation and arc flash — crowding the contactor against other devices or the enclosure wall will shorten its life. Main contact wiring accepts solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². The spring terminals grip the wire without needing ferrules, though ferruled stranded wire is still recommended for repeated re-termination.

Frequently asked questions

What are the key ratings for this contactor?

The coil is 24 VDC. DC switching capacity is 10 A at 24 V, 2 A at 48/60 V, 1 A at 110 V, 0.9 A at 125 V, 3 A at 400 V, 2 A at 500/690 V. AC switching capacity is 11 A at 480/600 V and 2 hp at 230 V. Mechanical life is 30,000,000 operations.

What is the mounting and wiring specification?

It mounts on a 35 mm DIN rail (DIN EN 60715) with screw or snap-on. Dimensions are 45 x 70 x 121 mm. Main contacts accept 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or 2x 4 mm² solid or stranded wire via spring terminals. Clearances: 10 mm up/down/forward, 6 mm sides.

Does this contactor include an auxiliary switch?

Yes, it has an auxiliary switch built in, usable for status feedback or interlocking.

MPN
3RT2017-2KB42-1LA0