Siemens 3RH22441BB40 Auxiliary Contactor
Specifications
| Parameter | Value |
|---|---|
| Coil Voltage | 24 VDC |
| Coil Current | 166.7 mA |
| Coil Power | 4 W |
| Coil Resistance | 144 Ω |
| Contact Form | 3PST-NO (3 Form A) |
| Mounting Type | Chassis Mount, DIN Rail |
| Must Operate Voltage | 19.2 VDC |
| Operating Temperature | 25°C ~ 60°C |
| Features | Auxiliary Contacts |
| Encapsulation | Bulk |
The base product number 3RH22441 places this relay in Siemens SIRIUS 3RH2 intermediate relay series with auxiliary contact functionality.
Comparison with Similar Siemens 3RH2 Relays
The reader must verify all specifications independently before specifying any alternate.
| Spec | 3RH22441BB40 | 3RH22442BB40 | 3RH22444BW40 | 3RH22441BF40 |
|---|---|---|---|---|
| Coil Voltage | 24 VDC | 24 VDC | 48 VDC | 110 VDC |
| Coil Power | 4 W | 4 W | 4 W | 4 W |
| Contact Form | 3PST-NO | 3PST-NO | 8PST-4NO/4NC | 8PST-4NO/4NC |
| Mounting | DIN Rail | DIN Rail | DIN Rail | DIN Rail |
| Similarity | — | 1.0 | 1.0 | 1.0 |
3RH22442BB40 shares the identical 24 VDC coil rating and 3PST-NO contact form; the suffix difference (BB40 vs BB40) indicates minor variant within the same base frame.
3RH22444BW40 raises the coil voltage to 48 VDC and expands contact configuration to 8-pole (4 NO + 4 NC) while retaining 4 W coil power and DIN Rail mounting.
3RH22441BF40 uses 110 VDC coil with matching 4 W power consumption but doubles the pole count to 8-pole; must-operate rises proportionally to 88 VDC.