Skip to main content
Log in
Siemens 3RT1024-1BG40-1AA0 — Contactors

Siemens SIRIUS 3RT1024-1BG40-1AA0 Power Contactor, S0 Frame,

MPN3RT1024-1BG40-1AA0

Siemens SIRIUS 3RT1024-1BG40-1AA0 power contactor, S0 frame, 10 A AC-12 maximum operating current, 5.5 kW at AC-2 400 V, screw-type terminals, 45 mm width.

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

3RT1024-1BG40-1AA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT1024-1BG40-1AA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V12.5 A
Rated value @ 400 V3 A
Rated value @ 500 V7.5 kW
Rated value @ 690 V7.5 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
3RT1024-1BG40-1AA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1024-1BG40-1AA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1024-1BG40-1AA0 — 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
3RT1024-1BG40-1AA0 — 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
3RT1024-1BG40-1AA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1024-1BG40-1AA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1024-1BG40-1AA0 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth101 mm

Product details

What this SIRIUS S0 contactor carries

For motor loads, it's specced at 5.5 kW in AC-2 at 400 V (slip-ring motors, wound-rotor applications) and 12.5 A in AC-4 at 400 V (plugging, inching, reversing duty). The holding and closing power of the DC magnet coil is a steady 5.4 W, which keeps the control transformer sizing simple.

Panel fit and wiring reality

Main circuit terminals are screw-type, accepting 2x (0.75... 4 mm²) solid or 2x (1... 2.5 mm²) stranded, with a max of 2x 10 mm². Front face carries IP20 protection — safe for finger contact in an open panel; the terminal area itself is IP00, so live parts are exposed until the gland plate is on.

For Type 1 coordination (welding allowed, but no fire risk), it's gL/gG 63 A.

Frequently asked questions

What is the closest functional second-source — 3RT1015-1BB42?

The 3RT1015-1BB42 is a smaller S00 frame contactor with lower ratings (typically 7 A AC-3 vs this S0's 10 A AC-12). It will not drop into the same panel without rewiring — the footprint, terminal spacing, and coil voltage are different. The 3RT1024-1BG40-1AA0 is the correct S0 frame for 5.5 kW motor loads at 400 V.

What is the listed depth of this contactor?

The depth is 101 mm, with a width of 45 mm and height of 85 mm — standard S0 frame dimensions for DIN rail mounting.

What wire sizes does the main circuit accept?

Screw-type terminals accept 2x (0.5... 1.5 mm²) solid, 2x (0.75... 2.5 mm²) solid, max 2x (0.75... 4 mm²) solid; for stranded, 2x (1... 2.5 mm²) and 2x (2.5... 6 mm²), max 2x 10 mm². AWG equivalents are 2x (16... 12) and 2x (14... 10), with 1x 8 max.

What compliance documentation is available?

The part carries IEC ratings (pollution degree 3, altitude 2 000 m, operating temp -25 to +60 °C) and is designed to DIN EN 50022 mounting rail standards. Specific RoHS/REACH/UL documentation should be requested with the RFQ, as the evidence does not list those certifications directly.

MPN
3RT1024-1BG40-1AA0