Skip to main content
Siemens 3RT1036-3BB40 — Contactors

Siemens SIRIUS 3RT1036-3BB40 Power Contactor, 24 VDC Coil, S

MPN3RT1036-3BB40

Siemens SIRIUS power contactor, S2 size, 3RT1036-3BB40, 24 VDC coil, screw-type terminals, 22 kW at AC-2 400 V, 41 A at AC-4 400 V, DIN rail mount.

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

3RT1036-3BB40 — Identification
ParameterValue
Contactor frame sizeS2
3RT1036-3BB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V41 A
Rated value @ 400 V3 A
Rated value @ 500 V30 kW
Rated value @ 690 V11.4 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
3RT1036-3BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1036-3BB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1036-3BB40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 160 A
Short-circuit coordination type 2, fusefuse gL/gG: 80 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1036-3BB40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0.75 ... 16 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1036-3BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1036-3BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1036-3BB40 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth130 mm

Product details

The 24 VDC coil is rated at 10 A holding current at 24 V, with a DC operating time of 20 to 25 ms and an arcing time of 10 to 15 ms.

At 500 V the contactor is rated for 30 kW, and at 690 V for 11.4 kW, so it handles higher-voltage motor circuits but with reduced power due to the voltage derating. The mechanical endurance is 10 million cycles typical, with maximum switching rates of 1000 cycles/hour at AC-1, 800 at AC-3, and 300 at AC-4 — so for high-duty reversing applications, the AC-4 rate governs the lifetime. The front is IP20 protected (finger-safe), while the terminals are IP00 — so the panel enclosure provides the terminal protection.

The main circuit screw terminals accept 2x (0.75 to 25 mm²) stranded wire or 2x (0.25 to 2.5 mm²) solid wire, with a minimum permissible cross-section of 16 mm² at 40 °C. Side-by-side mounting is allowed without derating, which saves panel width when grouping multiple contactors. The S2 frame measures 55 mm wide, 112 mm high, and 130 mm deep — check your enclosure depth before committing.

Frequently asked questions

What are the key ratings for this contactor?

The AC-2 rating at 400 V is 22 kW for wound-rotor motor switching. The AC-4 rating at 400 V is 41 A for plugging and inching duty. At 500 V it is rated 30 kW, and at 690 V it is rated 11.4 kW. The coil is 24 VDC with a 10 A holding current.

What compliance documentation does the 3RT1036-3BB40 carry?

The part is RoHS compliant with a substance prohibitance date of May 1, 2012. The front is IP20 rated, terminals are IP00. Pollution degree 3 is specified for industrial environments.

Can the 3RT1036-3BB40 be mounted side-by-side with other contactors?

Yes, side-by-side mounting is permitted without derating, which allows for compact panel layouts.

MPN
3RT1036-3BB40