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| Type | 3RV2 |
| Breaker Type | Motor Protection Circuit Breakers |
| Rated current | 28 |
| Number of Poles | 4 pole |
| Setting range for thermal overload releases | 23...28 A |
Circuit breaker size S0 for motor protection, CLASS 10 A-release
23...28 A N-release 364 A ring cable lug connection Standard
switching capacity
product brand name SIRIUS
product designation Circuit breaker
design of the product For motor protection
product type designation 3RV2
General technical data
size of the circuit-breaker S0
size of contactor can be combined company-specific S00, S0
product extension
auxiliary switch Yes
power loss W for rated value of the current
at AC in hot operating state 13.25?W
at AC in hot operating state per pole 4.4?W
insulation voltage with degree of pollution 3 at AC
rated value
690?V
surge voltage resistance rated value 6?kV
maximum permissible voltage for safe isolation
in networks with grounded star point between
main and auxiliary circuit
400?V
in networks with grounded star point between
main and auxiliary circuit
400?V
protection class IP
on the front IP00
of the terminal IP00
shock resistance
acc. to IEC 60068-2-27 25g / 11 ms
mechanical service life (switching cycles)
of the main contacts typical 100?000
of auxiliary contacts typical 100?000
electrical endurance (switching cycles)
typical 100?000
type of protection according to ATEX directive
2014/34/EU
Ex II (2) GD
certificate of suitability according to ATEX directive
2014/34/EU
DMT 02 ATEX F 001
reference code acc. to DIN EN 81346-2 Q
Main circuit
number of poles for main current circuit 3
adjustable pick-up value current of the currentdependent overload release
23?...?28?A
operating voltage
rated value 690?V
at AC-3 rated value maximum 690?V
operating frequency rated value 50?...?60?Hz
operating current rated value 28?A
operating current
at AC-3
at 400 V rated value 28?A
operating power
at AC-3
at 230 V rated value 7?500?W
at 400 V rated value 15?000?W
at 500 V rated value 18?500?W
at 690 V rated value 22?000?W
operating frequency
at AC-3 maximum 15?1/h
Auxiliary circuit
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
phase failure detection Yes
trip class CLASS 10
design of the overload release thermal
operational short-circuit current breaking capacity
(Ics) at AC
at 240 V rated value 100?kA
at 400 V rated value 25?kA
at 500 V rated value 5?kA
at 690 V rated value 2?kA
maximum short-circuit current breaking capacity (Icu)
at AC at 240 V rated value 100?kA
at AC at 400 V rated value 55?kA
at AC at 500 V rated value 10?kA
at AC at 690 V rated value 4?kA
response value current
of instantaneous short-circuit trip unit 364?A
UL/CSA ratings
full-load current (FLA) for three-phase AC motor
at 480 V rated value 28?A
at 600 V rated value 28?A
yielded mechanical performance hp
for single-phase AC motor
at 110/120 V rated value 2?hp
at 230 V rated value 5?hp
for three-phase AC motor
at 200/208 V rated value 7.5?hp
at 220/230 V rated value 10?hp
at 460/480 V rated value 20?hp
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
at 500 V gL/gG 63 A
at 690 V gL/gG 63 A
Installation/ mounting/ dimensions
mounting position any
mounting type screw and snap-on mounting onto 35 mm standard mounting rail
according to DIN EN 60715
height 97?mm
width 45?mm
depth 97?mm
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Reviews
- D
Danny Navejas
Jul 02, 2025
Siemens Circuit Breaker 3RV2021-4NA40Affordable cost and fast delivery.HelpfulUnhelpful - D
Deo Rooplall
Dec 28, 2024
Siemens Circuit Breaker 3RV2021-4NA40Easy as can be.HelpfulUnhelpful - L
Len Meola
Nov 27, 2024
Siemens Circuit Breaker 3RV2021-4NA40That was incredible service, thanks a million!HelpfulUnhelpful - B
Benito Jaramillo
May 23, 2024
Siemens Circuit Breaker 3RV2021-4NA40FASTHelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
Siemens Circuit Breaker 3RV2021-4NA40All was ok! No problems whatsoever.HelpfulUnhelpful
Siemens Circuit Breaker 3RV2021-4NA40
✔ In Stock (Can ship in 5-7 days)

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12 Months Warranty for New Products
30 Days Money Back Guarantee
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