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Siemens Molded Case Circuit Breaker: 20 A Amps, 42kA at 480V AC, Fixed, Load Side Lug - ED-Frame Siemens Molded Case Circuit Breakers
SiemensED-Frame Siemens Molded Case Circuit Breakers

Siemens Molded Case Circuit Breaker: 20 A Amps, 42kA at 480V AC, Fixed, Load Side Lug

The SIEMENS Molded Case Circuit Breaker (SKU 3CMR3) is an ED-Frame, HED4 series device rated for 20 A amps with a maximum AIR rating of 42kA at 480V AC. It features a fixed instantaneous trip, ABC phase connection…

SKU 3G-OTH-22151

Brand
Siemens
Item
Molded Case Circuit Breaker: 20 A Amps, 42kA at 480V AC, Fixed, Load Side Lug
Category
ED-Frame Siemens Molded Case Circuit Breakers
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Technical Specifications

Siemens
Manufacturer Part Number
HED43B020
Series
HED4
Type
42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4
Max. AIR Rating
42kA at 480V AC
Phase Connection
ABC
Instantaneous Trip
Fixed
Terminal Connection
Load Side Lug
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Molded Case Circuit Breaker (SKU 3CMR3) is an ED-Frame, HED4 series device rated for 20 A amps with a maximum AIR rating of 42kA at 480V AC. It features a fixed instantaneous trip, ABC phase connection, and load-side lug terminal connection (MPN HED43B020).

Frequently Asked Questions

What is the SIEMENS HED43B020 molded case circuit breaker used for?

The SIEMENS HED43B020 is an ED-Frame molded case circuit breaker used for overcurrent protection in industrial and commercial electrical distribution systems. It is rated for 20 A amps with a 42kA interrupting rating at 480V AC, making it suitable for branch circuit protection in panelboards and switchboards.

What are the specifications of the SIEMENS HED43B020 circuit breaker?

The SIEMENS HED43B020 is an HED4 series molded case circuit breaker with a 20 A amp rating, 42kA maximum AIR at 480V AC, fixed instantaneous trip, ABC phase connection, and load-side lug terminal connection. It is an ED-Frame device with MPN HED43B020, designed for fixed mounting.

Where to buy the SIEMENS HED43B020 circuit breaker worldwide?

You can source the SIEMENS HED43B020 molded case circuit breaker through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this Siemens HED4 series breaker.

How to select the correct Siemens molded case circuit breaker for your application?

To select the correct Siemens molded case circuit breaker, verify the continuous current rating (20 A for HED43B020), interrupting capacity (42kA at 480V AC), phase connection (ABC), and terminal type (load-side lug). Ensure the frame size (ED-Frame) matches your panelboard and that the instantaneous trip is fixed as required.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens ed-frame siemens molded case circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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