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Siemens 3RV2021-4FA10 Motor Protection Circuit Breaker, S0 Size, Class 10, 34–40 A Original Brand New

$260.66

Circuit breaker S0 size for motor protection, Class 10, A-release 34–40 A, N-release 480 A, screw terminal, standard switching capacity.

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Overview

The Siemens 3RV2021-4FA10 Motor Protection Circuit Breaker is engineered for precise and dependable motor safeguarding. Designed in a compact S0 frame size, this circuit breaker integrates overload and short-circuit protection in one streamlined unit. The Class 10 trip class, 34–40 A thermal release range, and 480 A magnetic release make it ideal for motors requiring fast and efficient shutdown during malfunction.

This model supports standard switching capacity, making it suitable for general industrial applications. Its screw terminal design ensures strong electrical connectivity and easy installation, enhancing reliability and minimizing downtime. Whether used for new installations or upgrades, the 3RV2021-4FA10 provides the safety and performance expected from Siemens industrial technologies.

Benefit

  • Reliable Motor Protection: Prevents overloads, short circuits, and phase failures.

  • Adjustable Thermal Release (34–40 A): Ensures flexible configuration based on motor load.

  • High Standard Switching Capacity: Suitable for demanding industrial settings.

  • Compact S0 Size: Saves panel space and simplifies installation.

  • Durable Construction: Ensures long lifespan in harsh environments.

  • Easy Wiring: Screw-terminal design allows secure and straightforward connection.

Function

  • Overload protection

  • Short-circuit protection

  • Manual motor switching (ON/OFF)

  • Trip protection with Class 10 characteristics

Application

  • Industrial motor control systems

  • Pump control panels

  • Conveyor systems

  • HVAC motors

  • Machine automation equipment

  • Manufacturing plants

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Datasheet in PDF

Weight 0.404 kg
Dimensions 49.00 × 102.00 × 102.00 mm
Brand

SIEMENS

product brand name

SIRIUS

product designation

Circuit breaker

design of the product

For motor protection

product type designation

3RV2

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

16.25 W

● at AC in hot operating state per pole

5.4 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

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 IEC 81346-2

Q

installation altitude at height above sea level maximum

2 000 m

ambient temperature

● during operation

-20 … +40 °C

● during storage

-50 … +80 °C

● during transport

-50 … +80 °C

temperature compensation

-20 … +60 °C

relative humidity during operation

10 … 95 %

number of poles for main current circuit

3

adjustable current response value current of the current-dependent overload release

34 … 40 A

operating voltage

● rated value

20 … 690 V

● at AC-3 rated value maximum

690 V

operating frequency rated value

50 … 60 Hz

operational current rated value

40 A

operational current at AC-3 at 400 V rated value

40 A

operating power at AC-3

● at 230 V rated value

11 kW

operating frequency at AC-3 maximum

15 1/h

number of NC contacts for auxiliary contacts

0

number of NO contacts for auxiliary contacts

0

number of CO contacts for auxiliary contacts

0

product function

● ground fault detection

No

● phase failure detection

Yes

trip class

CLASS 10

design of the overload release

thermal

breaking capacity operating short-circuit current (Ics) at AC

● at 240 V rated value

100 kA

● at 400 V rated value

10 kA

● at 500 V rated value

3 kA

● at 690 V rated value

2 kA

breaking capacity maximum short-circuit current (Icu)

● at AC at 240 V rated value

100 kA

● at AC at 400 V rated value

20 kA

● at AC at 500 V rated value

6 kA

● at AC at 690 V rated value

3 kA

response value current of instantaneous short-circuit trip unit

480 A

full-load current (FLA) for 3-phase AC motor

● at 480 V rated value

40 A

● at 600 V rated value

40 A

yielded mechanical performance [hp]

● for single-phase AC motor

— at 110/120 V rated value

3 hp

— at 230 V rated value

7.5 hp

● for 3-phase AC motor

— at 200/208 V rated value

10 hp

— at 220/230 V rated value

10 hp

— at 460/480 V rated value

30 hp

product function short circuit protection

Yes

design of the short-circuit trip

magnetic

● at 400 V

gG 63 A

● at 500 V

gG 63 A

● at 690 V

gG 63 A

mounting position

any

fastening method

screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715

required spacing

● for grounded parts at 400 V

● for live parts at 400 V

● for grounded parts at 500 V

● for live parts at 500 V

● for grounded parts at 690 V

● for live parts at 690 V

— downwards

70 mm

— upwards

70 mm

— backwards

0 mm

— at the side

30 mm

— forwards

0 mm

product component removable terminal for auxiliary and control circuit

No

type of electrical connection

● for main current circuit

screw-type terminals

arrangement of electrical connectors for main current circuit

Top and bottom

type of connectable conductor cross-sections

— solid or stranded

2x (1 … 2.5 mm²), 2x (2.5 … 10 mm²)

— finely stranded with core end processing

2x (1 … 2.5 mm²), 2x (2.5 … 6 mm²), 1x 10 mm²

● at AWG cables for main contacts

2x (16 … 12), 2x (14 … 8)

tightening torque

● for main contacts with screw-type terminals

2 … 2.5 N·m

design of screwdriver shaft

Diameter 5 to 6 mm

size of the screwdriver tip

Pozidriv 2

design of the thread of the connection screw

● for main contacts

M4

B10 value

proportion of dangerous failures

● with high demand rate acc. to SN 31920

50 %

failure rate [FIT]

● with low demand rate acc. to SN 31920

50 FIT

T1 value for proof test interval or service life acc. to IEC 61508

10 y

protection class IP on the front acc. to IEC 60529

IP20

touch protection on the front acc. to IEC 60529

finger-safe, for vertical contact from the front

display version for switching status

Handle

For use in hazardous locations

Test Certificates Declaration of Conformity

last modified:

11/30/2021

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Siemens 3RV2021-4FA10 Motor Protection Circuit Breaker, S0 Size, Class 10, 34–40 ASiemens 3RV2021-4FA10 Motor Protection Circuit Breaker, S0 Size, Class 10, 34–40 A Original Brand New
$260.66

Availability: In stock

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