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Siemens Miniature Circuit Breaker: 40 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp - C-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensC-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens Miniature Circuit Breaker: 40 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ43407HG42) is a 40 A, C-Curve, 3-Pole UL489 DIN Rail-Mount unit. It features a Max. AIR Rating of 10kA at 277/480V AC and a DC Voltage Rating of 125V DC, with a Screw…

SKU 3G-OTH-20255

Brand
Siemens
Item
Miniature Circuit Breaker: 40 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp
Category
C-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
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Technical Specifications

Siemens
Manufacturer Part Number
5SJ43407HG42
Type
10kA at 277/480V AC, Screw Clamp, C
DC
125V
Max. AIR Rating
10kA at 277/480V AC
DC Voltage Rating
125V DC
Terminal Connection
Screw Clamp
View Full Spec Sheet

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ43407HG42) is a 40 A, C-Curve, 3-Pole UL489 DIN Rail-Mount unit. It features a Max. AIR Rating of 10kA at 277/480V AC and a DC Voltage Rating of 125V DC, with a Screw Clamp terminal connection.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SIEMENS 5SJ43407HG42 miniature circuit breaker used for?

The SIEMENS 5SJ43407HG42 is a 40 A, C-Curve, 3-pole UL489 miniature circuit breaker designed for overcurrent protection in industrial control panels, motor circuits, and branch circuits. It is suitable for both AC systems up to 277/480V and DC systems up to 125V, making it ideal for global installations requiring DIN-rail mounting.

What are the specifications of the SIEMENS 5SJ43407HG42?

The SIEMENS 5SJ43407HG42 is a 40 A, C-Curve, 3-pole miniature circuit breaker with a maximum AIR rating of 10kA at 277/480V AC and a DC voltage rating of 125V DC. It features screw clamp terminals and is UL489 listed for DIN-rail mounting. The manufacturer part number is 5SJ43407HG42.

Where to buy the SIEMENS 5SJ43407HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ43407HG42 miniature circuit breaker worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this Siemens-branded breaker to any country.

How to install the SIEMENS 5SJ43407HG42 miniature circuit breaker?

Install the SIEMENS 5SJ43407HG42 by snapping it onto a standard DIN rail. Ensure the circuit is de-energized, then connect conductors using the screw clamp terminals per the torque specifications in the Siemens manual. For DC applications, verify polarity and voltage does not exceed 125V DC. Always follow local electrical codes.

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 c-curve, 3-pole ul489 din rail-mount miniature 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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