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Siemens 3RH1921-2DA11

First lateral auxiliary switch 1 NO, 1 NC, spring-type terminal, for contactors 3RT1

MPN: 3RH1921-2DA11
Category: Instantaneous

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What is the Siemens 3RH1921-2DA11?

first lateral auxiliary switch 1 NO, 1 NC, spring-type terminal, for contactors 3RT1

Specifications

General technical data

insulation voltage with degree of pollution 3 at AC rated value	500 V
surge voltage resistance rated value	6 kV
protection class IP on the front	IP20
mechanical service life (operating cycles) typical	10 000 000
electrical endurance (operating cycles) at AC-15 at 230 V typical	200 000
Substance Prohibitance (day/month/year)	07/01/2006
Net Weight	51.58 g
number of NC contacts for auxiliary contacts – instantaneous contact	1
number of NO contacts for auxiliary contacts – instantaneous contact	1
number of CO contacts of auxiliary contacts instantaneous contact	0
operational current of auxiliary contacts at AC-12 – at 24 V	10 A
operational current of auxiliary contacts at AC-12 – at 230 V	10 A
operational current of auxiliary contacts at AC-14 – at 125 V	6 A
operational current of auxiliary contacts at AC-14 – at 250 V	6 A
operational current of auxiliary contacts at AC-12 maximum	10 A
operational current of auxiliary contacts at AC-15 – at 24 V	6 A
operational current of auxiliary contacts at AC-15 – at 230 V	6 A
operational current of auxiliary contacts at AC-15 – at 400 V	3 A
operational current of auxiliary contacts at DC-12 – at 24 V	10 A
operational current of auxiliary contacts at DC-12 – at 110 V	3 A
operational current of auxiliary contacts at DC-12 – at 220 V	1 A
operational current with 2 current paths in series at DC-12 – at 24 V rated value	10 A
operational current with 2 current paths in series at DC-12 – at 60 V rated value	10 A
operational current with 2 current paths in series at DC-12 – at 110 V rated value	4 A
operational current with 2 current paths in series at DC-12 – at 220 V rated value	2 A
operational current with 2 current paths in series at DC-12 – at 440 V rated value	1.3 A
operational current with 3 current paths in series at DC-12 – at 24 V rated value	10 A
operational current with 3 current paths in series at DC-12 – at 60 V rated value	10 A
operational current with 3 current paths in series at DC-12 – at 110 V rated value	10 A
operational current with 3 current paths in series at DC-12 – at 220 V rated value	3.6 A
operational current with 3 current paths in series at DC-12 – at 440 V rated value	2.5 A
operational current with 2 current paths in series at DC-13 – at 24 V rated value	10 A
operational current with 2 current paths in series at DC-13 – at 60 V rated value	3.5 A
operational current with 2 current paths in series at DC-13 – at 110 V rated value	1.3 A
operational current with 2 current paths in series at DC-13 – at 220 V rated value	0.9 A
operational current with 2 current paths in series at DC-13 – at 440 V rated value	0.2 A
operational current with 3 current paths in series at DC-13 – at 24 V rated value	10 A
operational current with 3 current paths in series at DC-13 – at 60 V rated value	4.7 A
operational current with 3 current paths in series at DC-13 – at 110 V rated value	3 A
operational current with 3 current paths in series at DC-13 – at 220 V rated value	1.2 A
operational current with 3 current paths in series at DC-13 – at 440 V rated value	0.5 A
operational current of auxiliary contacts at DC-13 – at 24 V	6 A
operational current of auxiliary contacts at DC-13 – at 48 V	2 A
operational current of auxiliary contacts at DC-13 – at 60 V	2 A
operational current of auxiliary contacts at DC-13 – at 110 V	1 A
operational current of auxiliary contacts at DC-13 – at 125 V	0.9 A
operational current of auxiliary contacts at DC-13 – at 220 V	0.3 A
operational current of auxiliary contacts at DC-13 – at 250 V	0.3 A
design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V	C characteristic: 10 A; 0.4 kA
contact reliability of auxiliary contacts	1 faulty switching per 100 million (17 V, 1 mA)

Ambient conditions

ambient temperature – during operation	-25 ... +60 °C
ambient temperature – during storage	-55 ... +80 °C

Safety related data

product function – mirror contact according to IEC 60947-4-1	Yes; with 3RT1
product function – positively driven operation according to IEC 60947-5-1	No

Short-circuit protection

design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V	C characteristic: 10 A; 0.4 kA
design of the fuse link for short-circuit protection of the auxiliary switch required	gG: 10 A (500 V, 1 kA)

Installation/ mounting/ dimensions

fastening method	snap-on mounting
height	72.5 mm
width	10 mm
depth	71 mm

Connections/ Terminals

type of electrical connection for auxiliary and control circuit	spring-loaded terminals
connectable conductor cross-section for auxiliary contacts – solid or stranded	0.5 ... 2.5 mm²
connectable conductor cross-section for auxiliary contacts – finely stranded with core end processing	0.5 ... 2.5 mm²
connectable conductor cross-section for auxiliary contacts – finely stranded without core end processing	0.5 ... 2.5 mm²
for auxiliary contacts – — solid or stranded	2x (0.5 ... 2.5 mm²)
for auxiliary contacts – — finely stranded with core end processing	2x (0.5 ... 1.5 mm²)
for auxiliary contacts – — finely stranded without core end processing	2x (0.5 ... 2.5 mm²)
for auxiliary contacts – for AWG cables for auxiliary contacts	2x (20 ... 14)
AWG number as coded connectable conductor cross section for auxiliary contacts	20 ... 14

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3RH1921-2DA11PDF

3RH1921-2DA11: frequently asked questions

When can 3RH1921-2DA11 be shipped?

3RH1921-2DA11 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 3RH1921-2DA11 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 3RH1921-2DA11 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 3RH1921-2DA11, subject to availability and destination.