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Siemens 5SJ43028HG42 D-Curve 3-Pole UL489 Miniature Circuit Breaker - D-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensD-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens 5SJ43028HG42 D-Curve 3-Pole UL489 Miniature Circuit Breaker

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

Brand
Siemens
Item
5SJ43028HG42 D-Curve 3-Pole UL489 Miniature Circuit Breaker
Category
D-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

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

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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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This 3-pole miniature circuit breaker features a D-curve trip characteristic for high inrush loads, rated 1.6 A with a maximum interrupting rating of 10 kA at 277/480 V AC and a DC voltage rating of 125 V. It uses screw clamp terminals and is UL489 listed for DIN rail mounting, suitable for overcurrent protection in industrial control panels, motor circuits, and DC power systems
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This 3-pole miniature circuit breaker features a D-curve trip characteristic for high inrush loads, rated 1.6 A with a maximum interrupting rating of 10 kA at 277/480 V AC and a DC voltage rating of 125 V. It uses screw clamp terminals and is UL489 listed for DIN rail mounting, suitable for overcurrent protection in industrial control panels, motor circuits, and DC power systems
This 3-pole miniature circuit breaker features a D-curve trip characteristic for applications with high inrush currents, such as motor and transformer circuits. Rated 0.5 A with a maximum interrupting capacity of 10 kA at 277/480 V AC and 125 V DC, it uses screw clamp terminals for secure wiring. Suitable for branch circuit protection in industrial control panels and equipment
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This 3-pole miniature circuit breaker features a D-curve trip characteristic for applications with high inrush currents, such as motor and transformer circuits. Rated 0.5 A with a maximum interrupting capacity of 10 kA at 277/480 V AC and 125 V DC, it uses screw clamp terminals for secure wiring. Suitable for branch circuit protection in industrial control panels and equipment
This 3-pole miniature circuit breaker features a D-curve trip characteristic for high inrush loads. Rated 32A, 125V DC, and 10kA at 277/480V AC, it is UL489 listed for DIN rail mounting with screw clamp terminals. Suitable for branch circuit protection in industrial power distribution systems
Siemens
This 3-pole miniature circuit breaker features a D-curve trip characteristic for high inrush loads. Rated 32A, 125V DC, and 10kA at 277/480V AC, it is UL489 listed for DIN rail mounting with screw clamp terminals. Suitable for branch circuit protection in industrial power distribution systems
Three-pole miniature circuit breaker with D-curve tripping characteristic, rated 13 A. Suitable for overload and short-circuit protection in DC circuits up to 125 V and AC circuits up to 277/480 V with 10 kA interrupting capacity. Features screw clamp terminals for secure wiring and is designed for DIN rail mounting. Commonly used in control panels and power distribution systems
Siemens
Three-pole miniature circuit breaker with D-curve tripping characteristic, rated 13 A. Suitable for overload and short-circuit protection in DC circuits up to 125 V and AC circuits up to 277/480 V with 10 kA interrupting capacity. Features screw clamp terminals for secure wiring and is designed for DIN rail mounting. Commonly used in control panels and power distribution systems
This 3-pole miniature circuit breaker features a D-curve trip characteristic for moderate inrush currents. Rated 5A with a maximum interrupting rating of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals. Suitable for branch circuit protection in industrial control panels and equipment
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This 3-pole miniature circuit breaker features a D-curve trip characteristic for moderate inrush currents. Rated 5A with a maximum interrupting rating of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals. Suitable for branch circuit protection in industrial control panels and equipment
This 3-pole miniature circuit breaker is rated 8 A with a D-Curve trip characteristic. It provides overcurrent protection for branch circuits and equipment in AC systems up to 277/480V and DC systems up to 125V. The unit features a screw clamp terminal connection and is UL489 listed for DIN rail mounting
Siemens
This 3-pole miniature circuit breaker is rated 8 A with a D-Curve trip characteristic. It provides overcurrent protection for branch circuits and equipment in AC systems up to 277/480V and DC systems up to 125V. The unit features a screw clamp terminal connection and is UL489 listed for DIN rail mounting

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This 3-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents, such as motor and transformer loads. Rated 16A with a maximum AIR of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals and is UL489 listed for DIN rail mounting
Siemens
This 3-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents, such as motor and transformer loads. Rated 16A with a maximum AIR of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals and is UL489 listed for DIN rail mounting
This 3-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents, such as motor and transformer loads. Rated 3 A with a maximum interrupting rating of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals and is UL489 listed for DIN rail mounting. Suitable for industrial control panels and DC applications
Siemens
This 3-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents, such as motor and transformer loads. Rated 3 A with a maximum interrupting rating of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals and is UL489 listed for DIN rail mounting. Suitable for industrial control panels and DC applications
Three-pole miniature circuit breaker with D-curve trip characteristic for overload and short-circuit protection. Rated 10A with 10kA interrupting capacity at 277/480V AC and 125V DC. Screw clamp terminals for secure wiring. Suitable for motor and transformer circuits with high inrush currents
Siemens
Three-pole miniature circuit breaker with D-curve trip characteristic for overload and short-circuit protection. Rated 10A with 10kA interrupting capacity at 277/480V AC and 125V DC. Screw clamp terminals for secure wiring. Suitable for motor and transformer circuits with high inrush currents
This 3-pole miniature circuit breaker is rated 4 A with a D tripping curve. It provides overcurrent protection for branch circuits in AC systems up to 277/480V and DC systems up to 125V. The unit features a screw clamp terminal connection and is UL489 listed for DIN-rail mounting in industrial and commercial panels
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This 3-pole miniature circuit breaker is rated 4 A with a D tripping curve. It provides overcurrent protection for branch circuits in AC systems up to 277/480V and DC systems up to 125V. The unit features a screw clamp terminal connection and is UL489 listed for DIN-rail mounting in industrial and commercial panels
This 3-pole miniature circuit breaker features a D-curve trip characteristic for applications with high inrush currents, such as motor and transformer circuits. It is UL489 listed for branch circuit protection and mounts on a DIN rail. Rated 6 A, 125V DC, with a maximum interrupting rating of 10kA at 277/480V AC. Terminal connection is screw clamp
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This 3-pole miniature circuit breaker features a D-curve trip characteristic for applications with high inrush currents, such as motor and transformer circuits. It is UL489 listed for branch circuit protection and mounts on a DIN rail. Rated 6 A, 125V DC, with a maximum interrupting rating of 10kA at 277/480V AC. Terminal connection is screw clamp
This 3-pole miniature circuit breaker features a D-curve trip characteristic for high inrush applications. Rated 15A with a maximum AIR of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals for secure wiring. Suitable for branch circuit protection in industrial and commercial distribution panels, motor control centers, and lighting panels
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This 3-pole miniature circuit breaker features a D-curve trip characteristic for high inrush applications. Rated 15A with a maximum AIR of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals for secure wiring. Suitable for branch circuit protection in industrial and commercial distribution panels, motor control centers, and lighting panels
This Siemens miniature circuit breaker is a D-curve, 3-pole device rated at 0.5 A with a DC voltage rating of 60V DC and a maximum AIR rating of 14 kA. It features screw clamp terminals and is UL489 listed for DIN rail mounting. Suitable for overcurrent protection in DC circuits within industrial control panels and power distribution systems
Siemens
This Siemens miniature circuit breaker is a D-curve, 3-pole device rated at 0.5 A with a DC voltage rating of 60V DC and a maximum AIR rating of 14 kA. It features screw clamp terminals and is UL489 listed for DIN rail mounting. Suitable for overcurrent protection in DC circuits within industrial control panels and power distribution systems
This 3-pole miniature circuit breaker features a D-curve trip characteristic and is rated for 1 A continuous current. It provides overcurrent and short-circuit protection in DC circuits up to 125V and AC circuits up to 277/480V with a 10kA interrupting capacity. The screw clamp terminals facilitate secure wiring connections, and the DIN rail mount design allows for installation in control panels and distribution boards
Siemens
This 3-pole miniature circuit breaker features a D-curve trip characteristic and is rated for 1 A continuous current. It provides overcurrent and short-circuit protection in DC circuits up to 125V and AC circuits up to 277/480V with a 10kA interrupting capacity. The screw clamp terminals facilitate secure wiring connections, and the DIN rail mount design allows for installation in control panels and distribution boards