Skip to main content
Log in
Siemens 3RT1025-1BP44 — Contactors

Siemens 3RT1025-1BP44 SIRIUS Power Contactor, S0, 230V AC

MPN3RT1025-1BP44

Siemens SIRIUS power contactor, size S0, 3RT1025-1BP44, 230 V AC coil, screw terminals, 7.5 kW at AC-2 400 V, 45 mm width, IP20 front.

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

3RT1025-1BP44 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-1BP44 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V15.5 A
Rated value @ 400 V3 A
Rated value @ 500 V10 kW
Rated value @ 690 V11 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1025-1BP44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1025-1BP44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-1BP44 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1025-1BP44 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1025-1BP44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-1BP44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1025-1BP44 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth150 mm

Product details

The coil is 230 V AC, with a closing and holding power of 5.4 W DC, so the control transformer needs to cover that draw.

Motor switching and contact ratings

At 500 V it handles 10 kW and at 690 V it handles 11 kW, so it can serve 690 V line applications up to that power. The auxiliary contact block carries two instantaneous contacts rated at 10 A at 24 V, 6 A at 230 V, and 0.3 A at 220 V DC. That covers signalling and interlocking in the control circuit.

Short-circuit coordination and environment

With type 2 coordination, the required fuse is gL/gG 25 A; with type 1 coordination it's 63 A. That dictates the upstream protection selection for the motor branch circuit. Side-by-side mounting is permitted, which saves rail space when ganging multiple contactors.

Frequently asked questions

What are the key ratings of the 3RT1025-1BP44?

The key ratings are: 7.5 kW at AC-2 400 V, 15.5 A at AC-4 400 V, 10 kW at 500 V, 11 kW at 690 V, with a 230 V AC coil. It has two auxiliary contacts rated at 10 A at 24 V.

Where can I buy the 3RT1025-1BP44?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will 3RT1025-1BP44 drop into a panel specified around 3RT1023-1AL20 without rewiring?

Both are SIRIUS S0 frame contactors with the same 45 mm width and DIN rail mounting, so the mechanical fit is the same. However, the coil voltage and auxiliary contact configuration differ, so verify the control circuit wiring matches this 230 V AC coil.

MPN
3RT1025-1BP44