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Siemens 3RH1921-2KA02

Second lateral Auxiliary switch, 2 NC contacts, spring-type terminal, for contactors 3RT1

MPN: 3RH1921-2KA02
Category: Instantaneous

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What is the Siemens 3RH1921-2KA02?

second lateral Auxiliary switch, 2 NC contacts, spring-type terminal, for contactors 3RT1

Specifications

General

product brand name	SIRIUS
product category	Auxiliary switch
product designation	auxiliary switch
design of the product	second can be mounted laterally
product type designation	3RH19
suitability for use	for 3RT10, 3RT12, 3RT145, 3RT146, 3RT147

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	50.58 g
number of NC contacts for auxiliary contacts — instantaneous contact	2
number of NO contacts for auxiliary contacts — instantaneous contact	0
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
type of connectable conductor cross-sections — for auxiliary contacts — solid or stranded	2x (0.5 ... 2.5 mm²)
type of connectable conductor cross-sections — for auxiliary contacts — finely stranded with core end processing	2x (0.5 ... 1.5 mm²)
type of connectable conductor cross-sections — for auxiliary contacts — finely stranded without core end processing	2x (0.5 ... 2.5 mm²)
type of connectable conductor cross-sections — 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 3RH1921-2KA02PDF

3RH1921-2KA02: frequently asked questions

When can 3RH1921-2KA02 be shipped?

3RH1921-2KA02 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 3RH1921-2KA02 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 3RH1921-2KA02 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 3RH1921-2KA02, subject to availability and destination.