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Siemens Miniature Circuit Breaker: 2 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp - D-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensD-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens Miniature Circuit Breaker: 2 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ43028HG42) is a D-Curve, 3-Pole UL489 DIN Rail-Mount unit rated at 2 A Amps. It features a Max. AIR Rating of 10kA at 277/480V AC, a DC Voltage Rating of 125V DC, and…

SKU 3G-OTH-20726

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Siemens
Item
Miniature Circuit Breaker: 2 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp
Category
D-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
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Technical Specifications

Siemens
Manufacturer Part Number
5SJ43028HG42
Type
10kA at 277/480V AC, Screw Clamp, D
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 5SJ43028HG42) is a D-Curve, 3-Pole UL489 DIN Rail-Mount unit rated at 2 A Amps. It features a Max. AIR Rating of 10kA at 277/480V AC, a DC Voltage Rating of 125V DC, and a Screw Clamp terminal connection.

Frequently Asked Questions

What is the SIEMENS 5SJ43028HG42 miniature circuit breaker used for?

This D-Curve, 3-pole UL489 miniature circuit breaker is used for protecting industrial equipment and branch circuits against overloads and short circuits. It is suitable for DC applications up to 125V DC and AC systems up to 480V, commonly found in control panels, machinery, and power distribution.

What are the specifications of the SIEMENS 5SJ43028HG42?

The SIEMENS 5SJ43028HG42 is a D-Curve, 3-pole miniature circuit breaker rated at 2 A Amps. It has a Max. AIR Rating of 10kA at 277/480V AC, a DC Voltage Rating of 125V DC, and a Screw Clamp terminal connection. It is UL489 listed for DIN rail mounting.

Where to buy the SIEMENS 5SJ43028HG42 worldwide?

You can source the SIEMENS 5SJ43028HG42 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; we supply genuine Siemens components for industrial applications.

How to install the SIEMENS 5SJ43028HG42 miniature circuit breaker?

Install the SIEMENS 5SJ43028HG42 by snapping it onto a standard DIN rail. Ensure the circuit is de-energized. Connect wires to the Screw Clamp terminals using the recommended torque. For DC applications, verify polarity and voltage rating (125V DC). Follow Siemens guidelines and 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 d-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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