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SIEMENS

Siemens 3VA5120-4EC31-0AA0 Circuit Breaker 3VA5 UL Frame 125, 3-Pole, 20A, 25kA @ 480V Original Brand New

Model / SKU3VA5120-4EC31-0AA0

High-performance Molded Case Circuit Breaker (MCCB) from the 3VA5 UL Frame 125 series. Featuring a 20A current rating and a breaking capacity of 25kA at 480V, this 3-pole breaker is designed for robust line protection using the TM230 thermal-magnetic trip unit.

Original price was: $209.20.Current price is: $144.20.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 3VA5120-4EC31-0AA0 is a high-performance 3VA5 UL molded case circuit breaker designed for reliable line protection in industrial and commercial electrical systems. Built on the UL Frame 125, this circuit breaker delivers a breaking capacity of 25 kA at 480 V and ensures dependable protection against overloads and short circuits.

Equipped with TM230 thermal-magnetic trip unit (FTAM), the breaker provides fixed overload and short-circuit protection, making it an ideal solution for stable and secure power distribution.

Key Benefit

  • Reliable overload and short-circuit protection

  • High breaking capacity of 25 kA at 480 V

  • Compact UL Frame 125 design

  • Durable Siemens engineering for long service life

  • Suitable for industrial and commercial power systems

  • Fixed settings reduce risk of misconfiguration

Product Function

  • Line protection for low-voltage power distribution

  • Overload protection (Ir) permanently set at 20 A

  • Short-circuit protection (Ii) fixed between 7.5 to 15 × In

  • Safe interruption of fault currents

  • Ensures compliance with UL standards

Technical Specification

  • Manufacturer: Siemens

  • Series: 3VA5

  • Frame Size: UL Frame 125

  • Poles: 3-Pole

  • Rated Current (In): 20 A

  • Overload Protection (Ir): 20 A, permanently set

  • Short-Circuit Protection (Ii): 7.5…15 × In

  • Breaking Capacity: 25 kA @ 480 V

  • Trip Unit: TM230, FTAM

  • Connection: Without connection

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Datasheet in PDF

Specifications

SKU / Model3VA5120-4EC31-0AA0
BrandSIEMENS
product brand nameSENTRON
product designationMolded-case circuit breaker
product designation / according to UL fileSEAS
Product versionSystem protection
design of the load switch / acc. to UL 489 / Heating, Air Conditioning, and Refrigeration circuit breaker (HACR Type)Yes
design of the load switch / acc. to UL 489 / High-Intensity-Discharge circuit breaker (HID Type)Yes
design of the load switch / acc. to UL 489 / Switching Duty circuit breaker (SWD Type)Yes
design of the overcurrent releaseTM230
protection function of the overcurrent releaseLI
number of poles3
rated insulation voltage Ui800 V
Max. rated operational voltage Ue with DC500 V
power loss [W] / maximum12.2 W
Active power loss / for rated value of the current / at AC / in hot operating state / per pole4.07 W
mechanical service life (switching cycles) / typical20 000
Electrical endurance (switching cycles) / at AC-1 / at 380/415 V 50/60 Hz8 000
Electrical endurance (switching cycles) / at AC-1 / at 690 V 50/60 Hz4 000
electrical endurance (switching cycles) / at 480 V8 000
electrical endurance (switching cycles) / at 600 V4 000
Neutral conductors / upgradeable/retrofittableNo
product function-
● communication functionNo
● other measurement functionNo
marking / acc. to UL 489 / 100%-rated breakerNo
operational current-
● at 40 °C20 A
● at 45 °C20 A
● at 50 °C19 A
● at 55 °C19 A
● at 60 °C19 A
● at 65 °C18 A
● at 70 °C18 A
switching capacity class of the circuit breakerS
breaking capacity maximum short-circuit current (Icu)-
breaking capacity operating short-circuit current (Ics)-
short-circuit current making capacity (Icm)-
● at 415 V75.6 kA
● at 690 V7.5 kA
design of short-circuit protectionFor switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter
breaking capacity current-
● at 240 V65 kA
● at 480 V25 kA
● at 600 Y/347 V14 kA
Adjustable response value current / lg min.20 A
Ground fault protection / tripping switchable / I2t=ON/OFFNo
height [in]5.51 in
Height140 mm
width [in]3 in
Width76.2 mm
depth [in]3.01 in
arrangement of electrical connectors / for main current circuitWithout connection
type of electrical connection / for main current circuitWithout
product component-
● undervoltage releaseNo
● voltage triggerNo
● trip indicatorNo
number of CO contacts / for auxiliary contacts0
product extension / optional / motor driveYes
protection class IP / on the frontIP40
ambient temperature-
● during operation / minimum-25 °C
● during operation / maximum70 °C
● during storage / minimum-40 °C
● during storage / maximum80 °C
reference code / acc. to IEC 81346-2Q
certificate of suitability / as approval for NAVAL (no combat vessels) / supplement SBNo
last modified:10/11/2021
Weight0.963 kg
Dimensions35125254803-230.2020 × -75.15 mm

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