
Relays
3RH21221AU00
ActiveSiemens
CONTACTOR RELAY 3NO+2NC AC 240V
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Relays
3RH21221AU00
ActiveSiemens
CONTACTOR RELAY 3NO+2NC AC 240V
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | 3RH21221AU00 |
|---|---|
| Coil Power | 37 VA |
| Coil Voltage | 240 VAC |
| Contact Form | 5PST-3NO/2NC (3 Form A, 2 Form B) |
| Contact Rating (Current) | 10 A |
| Features | Auxiliary Contacts |
| Mounting Type | Chassis Mount, DIN Rail |
| Must Operate Voltage | 204 VAC |
| Operate Time | 33 ms |
| Operating Temperature [Max] | 60 °C |
| Operating Temperature [Min] | -25 °C |
| Release Time | 15 ms |
| Switching Voltage | 690 VAC |
| Termination Style | Screw Terminal |
3RH21221 Series
| Part | Contact Form | Coil Voltage | Termination Style | Contact Rating (Current) | Operate Time | Mounting Type | Switching Voltage | Features | Operating Temperature [Min] | Operating Temperature [Max] | Must Operate Voltage | Coil Power | Release Time | Coil Voltage [Min] | Coil Voltage [Max] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() Siemens | 3PST-2NO/1NC (2 Form A 1 Form B) | 110 VDC | Screw Terminal | 10 A | 130 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -40 °C | 70 °C | 77 VDC | 13 W | 20 ms | ||
![]() Siemens | 3PST-2NO/1NC (2 Form A 1 Form B) | 125 VDC | Screw Terminal | 10 A | 130 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -40 °C | 70 °C | 87.5 VDC | 13 W | 20 ms | ||
![]() Siemens | 5PST-3NO/2NC (3 Form A 2 Form B) | 240 VAC | Screw Terminal | 10 A | 33 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 60 °C | 204 VAC | 37 VA | 15 ms | ||
![]() Siemens | 4PST-2NO/2NC (2 Form A 2 Form B) | 72 VDC | Screw Terminal | 10 A | 100 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 60 °C | 57.6 VDC | 4 W | 13 ms | ||
![]() Siemens | 4PST-2NO/2NC (2 Form A 2 Form B) | 80 VDC | Screw Terminal | 10 A | 100 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 60 °C | 64 VDC | 4 W | 13 ms | ||
![]() Siemens | 4PST-2NO/2NC (2 Form A 2 Form B) | 110 VDC | Screw Terminal | 10 A | 130 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 60 °C | 77 VDC | 2.8 W | 20 ms | ||
![]() Siemens | 4PST-2NO/2NC (2 Form A 2 Form B) | Screw Terminal | 10 A | 33 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 60 °C | 37 VA | 15 ms | 200 VAC/DC | 220 VAC/DC | ||
![]() Siemens | 4PST-2NO/2NC (2 Form A 2 Form B) | 24 VDC | Screw Terminal | 10 A | 120 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 50 °C | 20.4 VDC | 1.6 W | 20 ms | ||
![]() Siemens | 4PST-2NO/2NC (2 Form A 2 Form B) | 120 VAC | Screw Terminal | 10 A | 33 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 60 °C | 102 VAC | 37 VA | 15 ms | ||
![]() Siemens | 4PST-2NO/2NC (2 Form A 2 Form B) | 250 VDC | Screw Terminal | 10 A | 100 ms | Chassis Mount DIN Rail | 690 VAC | Auxiliary Contacts | -25 °C | 60 °C | 200 VDC | 4 W | 13 ms |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Box | 1 | $ 98.59 | |
Description
General part information
3RH21221 Series
CONTACTOR RELAY 3NO+2NC AC 240V
Documents
Technical documentation and resources


