The Siemens 3RT2325-2BM40 is a SIRIUS S0 contactor with a 24 VDC coil terminated via spring-type terminals. It mounts by screw or snap-on onto 35 mm DIN rail per DIN EN 60715 — standard panel integration for a size S0 frame. DC switching capability spans 10 A at 24 V, 6 A at 60 V, 2 A at 48 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 10 A at 230 V, 3 A at 400 V, 2 A at 500 V, 0.1 A at 600 V, and 1 A at 690 V — these are the DC-1 resistive load ratings that govern real-world selection for DC motor braking circuits, solenoid valves, or DC bus precharge contactors. The contactor carries an auxiliary switch block (attachable up to 2 units) and accepts solid or stranded conductors from 0.5 to 2.5 mm² (2x) on the coil side and 1 to 10 mm² stranded on the main contacts. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward — useful when panel layout forces an unconventional orientation.
Siemens 3RT2325-2BM40 SIRIUS S0 Contactor, 24 VDC Coil, Spri
Siemens SIRIUS S0 contactor, 3RT2325-2BM40, 24 VDC coil, spring-type terminals, screw and snap-on mounting onto 35 mm DIN rail, size S0.
Specifications
Identification
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
Ratings & Performance
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 7.5 kW |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 10 A |
| Rated value @ 24 V | 10 A |
| Rated value @ 60 V | 6 A |
| Rated value @ 110 V | 1 A |
| Rated value @ 220 V | 0.3 A |
Control & Coil
| Parameter | Value |
|---|---|
| Control supply voltage type | DC |
Contacts & Poles
| Parameter | Value |
|---|---|
| Main poles | 4 |
| Main NO contacts | 4 |
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
Protection & Coordination
| Parameter | Value |
|---|---|
| Short-circuit coordination type 1, fuse | gG: 63 A (690 V, 100 kA) |
| Short-circuit coordination type 2, fuse | gG: 20 A (690 V, 100 kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (690 V, 1 kA) |
Connection & Mounting
| Parameter | Value |
|---|---|
| Main circuit connection | spring-loaded terminals |
| Aux. / control circuit connection | spring-loaded terminals |
| Conductor cross-section, solid | 2x (0.5 ... 2.5 mm²) |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 2.5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715 |
| Side-by-side mounting | Yes |
Durability
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 10 000 000 |
| Durability with aux. switch block (cycles, typ.) | 10 000 000 |
Environmental
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
Mechanical
| Parameter | Value |
|---|---|
| Width | 60 mm |
| Height | 102 mm |
| Depth | 107 mm |
Product details
Frequently asked questions
How do I get current pricing and availability for 3RT2325-2BM40?
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
Will 3RT2325-2BM40 drop into a panel specified around 3RT2015-2BF42 without rewiring?
Both are SIRIUS S0 contactors on the same 35 mm DIN rail footprint, so the mechanical fit is identical. The terminal technology differs — 3RT2325-2BM40 uses spring-type terminals on the coil, while 3RT2015-2BF42 uses screw-type. If the panel was wired for screw terminals, the spring-cage coil connection is compatible (same wire range 0.5–2.5 mm²) but the wire preparation differs: spring terminals require a ferrule or solid conductor, not a bare stranded loop. Main contact wiring is also spring-type on this unit, so verify the existing lug or ring-tongue terminations are compatible.
What is 3RT2325-2BM40's listed depth?
Depth is 107 mm.
What is 3RT2325-2BM40's listed solid conductor capacity?
Solid conductor capacity is 2x (0.5... 2.5 mm²).