Siemens 3RA23178XB301BB4 — S00 Frame DC Coil Contactor
Catalog comparators for 3RA23178XB301BB4
The 3RA23178XB301BB4 is a compact electromechanical contactor in the Siemens SIRIUS S00 series, rated 12 A per pole and intended for DIN-rail or back-panel mounting in control-circuit and load-branch applications. The table below presents the in-catalog DC and AC coil variants sharing the same base number (3RA23178XB), contact rating, and mounting footprint.
| Parameter | 3RA23178XB301BB4 (seed) | 3RA23178XB301BW4 | 3RA23178XB301FB4 | 3RA23178XB301AB0 | 3RA23178XB301AK6 | 3RA23178XB301AH0 | 3RA23178XB301AF0 | 3RA23178XB301AP0 | 3RA23178XB301AP6 |
|---|---|---|---|---|---|---|---|---|---|
| Coil Voltage | 24 VDC | 48 VDC | 24 VDC | 24 VAC | 120 VAC | 48 VAC | 110 VAC | 230 VAC | 240 VAC |
| Coil Power | 4 W | 4 W | 4 W | 37 VA | 37 VA | 37 VA | 37 VA | 37 VA | 37 VA |
| Contact Rating | 12 A | 12 A | 12 A | 12 A | 12 A | 12 A | 12 A | 12 A | 12 A |
| Contact Form | 3PST-NO | 3PST-NO | 3PST-NO | 3PST-NO | 3PST-NO | 3PST-NO | 3PST-NO | 3PST-NO | 3PST-NO |
| Mounting | Chassis / DIN Rail | Chassis / DIN Rail | Chassis / DIN Rail | Chassis / DIN Rail | Chassis / DIN Rail | Chassis / DIN Rail | Chassis / DIN Rail | Chassis / DIN Rail | Chassis / DIN Rail |
| Features | Aux Contacts | Aux Contacts | Aux Contacts | Aux Contacts | Aux Contacts | Aux Contacts | Aux Contacts | Aux Contacts | Aux Contacts |
| Encapsulation | Bulk | Box | Box | Box | Box | Box | Box | Box | Box |
| Operating Temp | 25–60 °C | 25–60 °C | 25–60 °C | 25–60 °C | 25–60 °C | 25–60 °C | 25–60 °C | 25–60 °C | 25–60 °C |
| Similarity | — | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
Why they are catalog-similar
All listed MPNs share the same base PN (3RA23178XB), the same 12 A / 3PST-NO contact arrangement, auxiliary-contact feature, and mounting scheme. The primary differentiation axis is coil voltage and associated coil power: DC coils draw 4 W, while all AC coil variants dissipate 37 VA. Package style differs between the seed (bulk) and alternates (box), which is a supply-unit distinction and does not alter the contact or coil electrical rating.
Key parameters — 3RA23178XB301BB4
- Coil Voltage: 24 VDC
- Coil Power: 4 W
- Coil Current: 166.7 mA
- Coil Resistance: 144 Ω
- Contact Rating: 12 A
- Contact Form: 3PST-NO (3 Form A)
- Operating Temperature: 25 °C to 60 °C
- Mounting: Chassis Mount, DIN Rail
- Encapsulation: Bulk
- Features: Auxiliary Contacts included