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Siemens Miniature Circuit Breaker: 4 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: 4 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ43048HG42) is a 4 A, D-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-20300

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Siemens
Item
Miniature Circuit Breaker: 4 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
5SJ43048HG42
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 5SJ43048HG42) is a 4 A, D-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.

Frequently Asked Questions

What is the SIEMENS 5SJ43048HG42 miniature circuit breaker used for?

The SIEMENS 5SJ43048HG42 is a 4 A, D-Curve, 3-pole UL489 miniature circuit breaker designed for industrial and commercial DIN-rail panels. It protects branch circuits against overloads and short circuits in AC systems up to 277/480V and DC systems up to 125V DC.

What are the specifications of the SIEMENS 5SJ43048HG42?

This SIEMENS IEC miniature circuit breaker is rated 4 A, D-Curve, 3-pole, with a max AIR rating of 10kA at 277/480V AC and a DC voltage rating of 125V DC. It uses a screw clamp terminal connection and is UL489 listed for DIN-rail mounting.

Where to buy the SIEMENS 5SJ43048HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ43048HG42 miniature circuit breaker worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to select the correct SIEMENS miniature circuit breaker for a DC application?

For DC applications, verify the breaker's DC voltage rating matches your system voltage. The SIEMENS 5SJ43048HG42 is rated 125V DC. Also confirm the current rating (4 A) and D-Curve trip characteristic for high-inrush loads. Always follow NEC and local 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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