Instantaneous Parts

Siemens

Auxiliary switch, lateral, 2 NO, on the left: 53/54, 63/64

Siemens

Auxiliary switch, on the front, 3 NO + 1 NC, 53/54, 61/62

Siemens

Auxiliary switch, on the front, 2 NO + 2 NC, 11 U, .3/.4

Siemens

Auxiliary switch, on the front, 1 NO + 1 NC, 11 U, .7/.8

Siemens

Auxiliary switch, solid-state compatible, lateral

Siemens

Auxiliary switch, lateral, 2 NO, on the left: 53/54, 63/64

Siemens

Auxiliary switch, lateral, 2 NC, on the left: 51/52, 61/62

Compare Instantaneous

Key specifications of the parts listed on this page, taken from the manufacturer's data sheets.

MPN	suitability for use	Net Weight	number of NC contacts for auxiliary contacts — instantaneous contact	number of NO contacts for auxiliary contacts — instantaneous contact	height
3RH2921-1DA20	for 3RT2.2, 3RT2.3, 3RT2.4, 3RH2	36.69 g	0	2	57.4 mm
3RH2911-1GA31	for 3RH2	54.69 g	1	3	37.5 mm
3RH2911-1FB22	for 3RT2.1, 3RT2.2, 3RT2.3, 3RT2.4, 3RH2	0.057 g	1	1	37.5 mm
3RH2911-1FB11	for 3RT2.1, 3RT2.2, 3RT2.3, 3RT2.4, 3RH2	0.044 kg	0	0	37.5 mm
3RH2921-2DE11	for 3RT2.2, 3RT2.3, 3RT2.4, 3RH2	45 g	1	1	61.2 mm
3RH2921-2DA20	for 3RT2.2, 3RT2.3, 3RT2.4, 3RH2	49.69 g	0	2	64.8 mm
3RH2921-1DA02	for 3RT2.2, 3RT2.3, 3RT2.4, 3RH2	37 g	2	0	57.4 mm

product category	Auxiliary switch
product designation	auxiliary switch
product type designation	3RH29
insulation voltage with degree of pollution 3 at AC rated value	690 V
surge voltage resistance rated value	6 kV
protection class IP on the front	IP20
number of CO contacts of auxiliary contacts instantaneous contact	0
ambient temperature — during operation	-25 ... +60 °C