Siemens

Siemens 3RV2321-4NC20

Circuit breaker size S0 for starter combination Rated current 28 A N-release 364 A Spring-type terminal…

MPN: 3RV2321-4NC20
Category: SIRIUS 3RV2 motor starter protectors

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What is the Siemens 3RV2321-4NC20?

Circuit breaker size S0 for starter combination Rated current 28 A N-release 364 A Spring-type terminal Standard switching capacity

Specifications

General

product brand name	SIRIUS
product designation	Circuit breaker
design of the product	For starter combinations
product type designation	3RV2

General technical data

Product equipment of circuit breaker for motor protection complete unit with protection device	Yes
size of the circuit-breaker	S0
size of contactor can be combined company-specific	S00, S0
product function disconnector functionality	Yes
product extension auxiliary switch	Yes
power loss [W] for rated value of the current — at AC in hot operating state	13.25 W
power loss [W] for rated value of the current — at AC in hot operating state per pole	4.4 W
type of calculation of power loss current-dependent	quadratic
insulation voltage with degree of pollution 3 at AC rated value	690 V
surge voltage resistance rated value	6 kV
maximum permissible voltage for protective separation — in networks with ungrounded star point between main and auxiliary circuit	400 V
maximum permissible voltage for protective separation — in networks with grounded star point between main and auxiliary circuit	400 V
protection class IP — on the front according to IEC 60529	IP20
protection class IP — on the front	IP20
protection class IP — of the terminal	IP20
shock resistance according to IEC 60068-2-27	25g / 11 ms
mechanical service life (operating cycles) — of the main contacts typical	100 000
mechanical service life (operating cycles) — of auxiliary contacts typical	100 000
electrical endurance (operating cycles) typical	100 000
reference code according to IEC 81346-2	Q
continuous current rated value	28 A
Substance Prohibitance (day/month/year)	10/01/2009
Net Weight	401.6 g

Ambient conditions

installation altitude at height above sea level maximum	2 000 m
ambient temperature — during operation	-20 ... +60 °C
ambient temperature — during storage	-50 ... +80 °C
ambient temperature — during transport	-50 ... +80 °C
relative humidity during operation	10 ... 95 %

Main circuit

number of poles for main current circuit	3
type of voltage for main current circuit	AC
operating voltage — rated value	690 V
operating voltage — rated value	20 ... 690 V
operating voltage — at AC-3 rated value maximum	690 V
operating voltage — at AC-3e rated value maximum	690 V
operating frequency rated value	50 ... 60 Hz
operational current rated value	28 A
operational current — at AC-3 at 400 V rated value	28 A
operational current — at AC-3e at 400 V rated value	28 A
operating power — at AC-3 — at 230 V rated value	7.5 kW
operating power — at AC-3 — at 400 V rated value	15 kW
operating power — at AC-3 — at 500 V rated value	18.5 kW
operating power — at AC-3 — at 690 V rated value	22 kW
operating power — at AC-3e — at 230 V rated value	7.5 kW
operating power — at AC-3e — at 400 V rated value	15 kW
operating power — at AC-3e — at 500 V rated value	18.5 kW
operating power — at AC-3e — at 690 V rated value	22 kW
operating frequency — at AC-3 maximum	15 1/h
operating frequency — at AC-3e maximum	15 1/h

Auxiliary circuit

type of voltage for auxiliary and control circuit	AC/DC
number of NC contacts for auxiliary contacts	0
number of NO contacts for auxiliary contacts	0
number of CO contacts for auxiliary contacts	0

Protective and monitoring functions

product function — ground fault detection	No
product function — phase failure detection	No
protection function thermal overload protection (ANSI 49)	No
maximum short-circuit current breaking capacity (Icu) — at AC at 240 V rated value	100 kA
maximum short-circuit current breaking capacity (Icu) — at AC at 400 V rated value	55 kA
maximum short-circuit current breaking capacity (Icu) — at AC at 500 V rated value	10 kA
maximum short-circuit current breaking capacity (Icu) — at AC at 690 V rated value	4 kA
operating short-circuit current breaking capacity (Ics) at AC — at 240 V rated value	100 kA
operating short-circuit current breaking capacity (Ics) at AC — at 400 V rated value	25 kA
operating short-circuit current breaking capacity (Ics) at AC — at 500 V rated value	5 kA
operating short-circuit current breaking capacity (Ics) at AC — at 690 V rated value	2 kA
response value current of instantaneous short-circuit trip unit	400 A

UL/CSA ratings

full-load current (FLA) for 3-phase AC motor — at 480 V rated value	28 A
full-load current (FLA) for 3-phase AC motor — at 600 V rated value	28 A
yielded mechanical performance [hp] — for single-phase AC motor — at 110/120 V rated value	2 hp
yielded mechanical performance [hp] — for single-phase AC motor — at 230 V rated value	5 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 200/208 V rated value	7.5 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 220/230 V rated value	10 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 460/480 V rated value	20 hp
UL File Number (CCN)	E47705 (NLRV, NLRV7)

Short-circuit protection

product function short circuit protection	Yes
design of the short-circuit trip	magnetic
design of the fuse link for IT network for short-circuit protection of the main circuit — at 400 V	gL/gG 63 A
design of the fuse link for IT network for short-circuit protection of the main circuit — at 500 V	gL/gG 63 A
design of the fuse link for IT network for short-circuit protection of the main circuit — at 690 V	gL/gG 63 A

Installation/ mounting/ dimensions

mounting position	any
fastening method	screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting method of circuit breaker for Transformer protection, Generator protection and system protection optional standard bar mounting	Yes
height	119 mm
width	45 mm
depth	97 mm
required spacing — with side-by-side mounting — forwards	0 mm
required spacing — with side-by-side mounting — backwards	0 mm
required spacing — with side-by-side mounting — upwards	50 mm
required spacing — with side-by-side mounting — downwards	50 mm
required spacing — with side-by-side mounting — at the side	0 mm
required spacing — for grounded parts — forwards	0 mm
required spacing — for grounded parts — backwards	0 mm
required spacing — for grounded parts — upwards	50 mm
required spacing — for grounded parts — at the side	30 mm
required spacing — for grounded parts — downwards	50 mm
required spacing — for live parts — forwards	0 mm
required spacing — for live parts — backwards	0 mm
required spacing — for live parts — upwards	50 mm
required spacing — for live parts — downwards	50 mm
required spacing — for live parts — at the side	30 mm
required spacing — for grounded parts at 400 V — downwards	30 mm
required spacing — for grounded parts at 400 V — upwards	30 mm
required spacing — for grounded parts at 400 V — at the side	9 mm
required spacing — for live parts at 400 V — downwards	30 mm
required spacing — for live parts at 400 V — upwards	30 mm
required spacing — for live parts at 400 V — at the side	9 mm
required spacing — for grounded parts at 500 V — downwards	30 mm
required spacing — for grounded parts at 500 V — upwards	30 mm
required spacing — for grounded parts at 500 V — at the side	9 mm
required spacing — for live parts at 500 V — downwards	30 mm
required spacing — for live parts at 500 V — upwards	30 mm
required spacing — for live parts at 500 V — at the side	9 mm
required spacing — for grounded parts at 690 V — downwards	50 mm
required spacing — for grounded parts at 690 V — upwards	50 mm
required spacing — for grounded parts at 690 V — backwards	0 mm
required spacing — for grounded parts at 690 V — at the side	30 mm
required spacing — for grounded parts at 690 V — forwards	0 mm
required spacing — for live parts at 690 V — downwards	50 mm
required spacing — for live parts at 690 V — upwards	50 mm
required spacing — for live parts at 690 V — backwards	0 mm
required spacing — for live parts at 690 V — at the side	30 mm
required spacing — for live parts at 690 V — forwards	0 mm

Connections/ Terminals

product component removable terminal for auxiliary and control circuit	No
type of electrical connection — for main current circuit	spring-loaded terminals
arrangement of electrical connectors for main current circuit	Top and bottom
type of connectable conductor cross-sections — for main contacts — solid or stranded	2x (1 ... 10 mm²)
type of connectable conductor cross-sections — for main contacts — finely stranded with core end processing	2x (1 ... 6 mm²)
type of connectable conductor cross-sections — for main contacts — finely stranded without core end processing	2x (1 ... 6 mm²)
type of connectable conductor cross-sections — for AWG cables for main contacts	2x (18 ... 8)
connectable conductor cross-section for main contacts — solid or stranded	1 ... 10 mm²
connectable conductor cross-section for main contacts — finely stranded with core end processing	1 ... 6 mm²
connectable conductor cross-section for main contacts — finely stranded without core end processing	1 ... 6 mm²
AWG number as coded connectable conductor cross section for main contacts	18 ... 8
design of screwdriver shaft	Diameter 3 mm
size of the screwdriver tip	3,0 x 0,5 mm

Safety related data

product function suitable for safety function	Yes
suitability for use — safety-related switching on	No
suitability for use — safety-related switching OFF	Yes
service life maximum	10 a
test wear-related service life necessary	Yes
proportion of dangerous failures — with low demand rate according to SN 31920	40 %
proportion of dangerous failures — with high demand rate according to SN 31920	50 %
B10 value with high demand rate according to SN 31920	5 000
failure rate [FIT] with low demand rate according to SN 31920	50 FIT
device type according to ISO 13849-1	3
overdimensioning according to ISO 13849-2 necessary	Yes
safety device type according to IEC 61508-2	Type A
T1 value — for proof test interval or service life according to IEC 61508	10 a
protection class IP on the front according to IEC 60529	IP20
touch protection on the front according to IEC 60529	finger-safe, for vertical contact from the front

Display

display version for switching status

Handle

Approvals Certificates

global warming potential [CO2 eq] / during manufacturing	2.68 kg
global warming potential [CO2 eq] / during sales	0.143 kg
global warming potential [CO2 eq] / during operation	72.7 kg
global warming potential [CO2 eq] / after end of life	-0.445 kg
global warming potential [CO2 eq] / total	75.078 kg

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3RV2321-4NC20PDF

3RV2321-4NC20: frequently asked questions

When can 3RV2321-4NC20 be shipped?

3RV2321-4NC20 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 3RV2321-4NC20 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 3RV2321-4NC20 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 3RV2321-4NC20, subject to availability and destination.