Specification	3RH21221VB40

Coil Power	1.6 W
Coil Voltage	24 VDC
Contact Form	B, PST-2NO/2NC, Form, A, 2
Contact Rating (Current)	10 A
Features	Auxiliary Contacts
Mounting Type	Chassis Mount, DIN Rail
Must Operate Voltage	20.4 VDC
Operate Time	120 ms
Operating Temperature (Max)	50 °C
Operating Temperature (Min)	-25 °C
Pin Count	4
Release Time	80 ms
Switching Voltage AC (Max)	690 VAC
Termination Style	Screw Terminal

3RH21221 Series

Part	Release Time	Coil Power	Operate Time	Mounting Type	Coil Voltage	Operating Temperature (Min)	Operating Temperature (Max)	Switching Voltage AC (Max)	Pin Count	Contact Form	Features	Termination Style	Must Operate Voltage	Contact Rating (Current)	Coil Voltage (Max)	Coil Voltage (Min)
Siemens 3RH21221KF400LA4	20 ms	13 W	130 ms	Chassis Mount DIN Rail	110 V	-40 °C	70 °C	690 VAC	3 pins	PST-2NO/1NC	Auxiliary Contacts	Screw Terminal	77 VAC	10 A
Siemens 3RH21221KG400LA4	20 ms	13 W	130 ms	Chassis Mount DIN Rail	125 VDC	-40 °C	70 °C	690 VAC	3 pins	PST-2NO/1NC	Auxiliary Contacts	Screw Terminal	87.5 VDC	10 A
Siemens 3RH21221AU00	15 ms	37 VA	33 ms	Chassis Mount DIN Rail	240 V	-25 °C	60 °C	690 VAC	5	2 3 A B Form PST-3NO/2NC	Auxiliary Contacts	Screw Terminal	204 VAC	10 A
Siemens 3RH21221BJ80	13 ms	4 W	100 ms	Chassis Mount DIN Rail	72 VDC	-25 °C	60 °C	690 VAC	4	2 A B Form PST-2NO/2NC	Auxiliary Contacts	Screw Terminal	57.6 VDC	10 A
Siemens 3RH21221BE80	13 ms	4 W	100 ms	Chassis Mount DIN Rail	80 VDC	-25 °C	60 °C	690 VAC	4	2 A B Form PST-2NO/2NC	Auxiliary Contacts	Screw Terminal	64 VDC	10 A
Siemens 3RH21221KF40	20 ms	2.8 W	130 ms	Chassis Mount DIN Rail	110 V	-25 °C	60 °C	690 VAC	4	2 A B Form PST-2NO/2NC	Auxiliary Contacts	Screw Terminal	77 VAC	10 A
Siemens 3RH21221TP000RA0	15 ms	37 VA	33 ms	Chassis Mount DIN Rail	230 VDC	-25 °C	60 °C	690 VAC	4	2 A B Form PST-2NO/2NC	Auxiliary Contacts	Screw Terminal	195.5 VDC	10 A
Siemens 3RH21221AN60	15 ms	37 VA	33 ms	Chassis Mount DIN Rail		-25 °C	60 °C	690 VAC	4	2 A B Form PST-2NO/2NC	Auxiliary Contacts	Screw Terminal		10 A	220 VAC/DC	200 VAC/DC
Siemens 3RH21221UB400KV0	13 ms	4 W	100 ms	Chassis Mount DIN Rail	24 VDC	-25 °C	60 °C	690 VAC	4	2 A B Form PST-2NO/2NC	Auxiliary Contacts	Screw Terminal	19.2 V	10 A
Siemens 3RH21221WB40	20 ms	1.6 W	120 ms	Chassis Mount DIN Rail	24 VDC	-25 °C	50 °C	690 VAC	4	2 A B Form PST-2NO/2NC	Auxiliary Contacts	Screw Terminal	20.4 VDC	10 A

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SIRIUS 2 Control Relay Specification and Catalog

3RH21221VB40 | Datasheet