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Siemens 5SJ42037HG42 C-Curve 2-Pole UL489 DIN Rail-Mount - C-Curve, 2-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensC-Curve, 2-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens 5SJ42037HG42 C-Curve 2-Pole UL489 DIN Rail-Mount

The SIEMENS IEC Miniature Circuit Breaker (SKU 5SJ42037HG42, MPN 5SJ42037HG42) is a 3 A, C-Curve, 2-Pole UL489 DIN Rail-Mount unit. It is rated for 10kA at 277/480V AC and 125V DC, with screw clamp terminals.

SKU 3G-OTH-21056

Brand
Siemens
Item
5SJ42037HG42 C-Curve 2-Pole UL489 DIN Rail-Mount
Category
C-Curve, 2-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
5SJ42037HG42
Type
10kA at 277/480V AC, Screw Clamp, 5SJ4
DC
125V
Max. AIR Rating
10kA at 277/480V AC
AC Voltage Rating
277/480V AC
DC Voltage Rating
125V DC
Terminal Connection
Screw Clamp

Technical Documents

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

Product Description

The SIEMENS IEC Miniature Circuit Breaker (SKU 5SJ42037HG42, MPN 5SJ42037HG42) is a 3 A, C-Curve, 2-Pole UL489 DIN Rail-Mount unit. It is rated for 10kA at 277/480V AC and 125V DC, with screw clamp terminals.

Frequently Asked Questions

What is the SIEMENS 5SJ42037HG42 miniature circuit breaker used for?

The SIEMENS 5SJ42037HG42 is a 3 A, C-Curve, 2-pole UL489 miniature circuit breaker for overcurrent protection in industrial control panels, HVAC equipment, and machinery. It mounts on DIN rail and handles 10kA at 277/480V AC or 125V DC, making it suitable for branch circuits and equipment in global facilities.

What are the specifications of the SIEMENS 5SJ42037HG42?

This SIEMENS IEC miniature circuit breaker (MPN 5SJ42037HG42) is rated 3 A, C-Curve, 2-pole, with a max AIR of 10kA at 277/480V AC and 125V DC. It uses screw clamp terminals and is UL489 listed for DIN-rail mounting. The AC voltage rating is 277/480V AC; DC voltage rating is 125V DC.

Where to buy the SIEMENS 5SJ42037HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ42037HG42 miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this UL489 DIN-rail breaker.

How to install the SIEMENS 5SJ42037HG42 on a DIN rail?

To install the SIEMENS 5SJ42037HG42, snap the breaker onto a standard 35 mm DIN rail until it locks. Ensure the rail is clean and the breaker is oriented with the line side up. Use a screwdriver to tighten the screw clamp terminals to the manufacturer's torque spec. Always de-energize the circuit before installation.

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, 2-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 2-pole miniature circuit breaker is rated 4A with a C-Curve trip characteristic, providing overcurrent protection for branch circuits and control panels. It is UL489 listed for DIN rail mounting, with a maximum AIR of 10kA at 277/480V AC and a DC voltage rating of 125V. Screw clamp terminals facilitate secure wiring connections
Siemens
This 2-pole miniature circuit breaker is rated 4A with a C-Curve trip characteristic, providing overcurrent protection for branch circuits and control panels. It is UL489 listed for DIN rail mounting, with a maximum AIR of 10kA at 277/480V AC and a DC voltage rating of 125V. Screw clamp terminals facilitate secure wiring connections
This Siemens miniature circuit breaker is a 2-pole, C-curve device rated for 5 A. It provides overcurrent protection for branch circuits in industrial and commercial electrical panels, with a maximum interrupting rating of 10 kA at 277/480 V AC and suitability for DC systems up to 125 V. The screw clamp terminals facilitate secure wiring connections
Siemens
This Siemens miniature circuit breaker is a 2-pole, C-curve device rated for 5 A. It provides overcurrent protection for branch circuits in industrial and commercial electrical panels, with a maximum interrupting rating of 10 kA at 277/480 V AC and suitability for DC systems up to 125 V. The screw clamp terminals facilitate secure wiring connections
Siemens 5SJ4 series miniature circuit breaker, 0.5 A, C-curve, 2-pole, UL489 listed. Rated 10kA at 277/480V AC and 125V DC. Screw clamp terminals for secure wiring. Suitable for overcurrent protection in branch circuits, control panels, and equipment within industrial electrical systems
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Siemens 5SJ4 series miniature circuit breaker, 0.5 A, C-curve, 2-pole, UL489 listed. Rated 10kA at 277/480V AC and 125V DC. Screw clamp terminals for secure wiring. Suitable for overcurrent protection in branch circuits, control panels, and equipment within industrial electrical systems
This 2-pole miniature circuit breaker features a C-Curve trip characteristic for moderate inrush currents. Rated 10 A with a maximum AIR of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals. Suitable for overcurrent protection in industrial control panels, lighting circuits, and motor branch circuits
Siemens
This 2-pole miniature circuit breaker features a C-Curve trip characteristic for moderate inrush currents. Rated 10 A with a maximum AIR of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals. Suitable for overcurrent protection in industrial control panels, lighting circuits, and motor branch circuits
This 2-pole miniature circuit breaker is rated 13A with a C-curve trip characteristic. It provides overcurrent protection for AC circuits up to 277/480V and DC circuits up to 125V, with a maximum interrupting rating of 10kA at 277/480V AC. The unit features screw clamp terminals and is designed for DIN rail mounting. Typical applications include branch circuit protection in industrial control panels, lighting circuits, and DC power systems
Siemens
This 2-pole miniature circuit breaker is rated 13A with a C-curve trip characteristic. It provides overcurrent protection for AC circuits up to 277/480V and DC circuits up to 125V, with a maximum interrupting rating of 10kA at 277/480V AC. The unit features screw clamp terminals and is designed for DIN rail mounting. Typical applications include branch circuit protection in industrial control panels, lighting circuits, and DC power systems
This 2-pole miniature circuit breaker features a C-curve trip characteristic for overcurrent protection in branch circuits and control panels. Rated 20A with a maximum interrupting rating of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals for secure wiring. The DIN rail-mount design simplifies installation in distribution boards and enclosures
Siemens
This 2-pole miniature circuit breaker features a C-curve trip characteristic for overcurrent protection in branch circuits and control panels. Rated 20A with a maximum interrupting rating of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals for secure wiring. The DIN rail-mount design simplifies installation in distribution boards and enclosures

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This 2-pole miniature circuit breaker features a C-curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 16A with a maximum interrupting capacity of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals. Suitable for branch circuit protection in industrial control panels, motor starters, and distribution boards
Siemens
This 2-pole miniature circuit breaker features a C-curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 16A with a maximum interrupting capacity of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals. Suitable for branch circuit protection in industrial control panels, motor starters, and distribution boards
This 2-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 35A 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 distribution boards
Siemens
This 2-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 35A 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 distribution boards
This 2-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for branch circuit protection. Rated 60 A at 240V AC and 60V DC with a 10 kA interrupting capacity, it uses screw clamp terminals for secure wiring. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery, it mounts on standard DIN rails
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This 2-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for branch circuit protection. Rated 60 A at 240V AC and 60V DC with a 10 kA interrupting capacity, it uses screw clamp terminals for secure wiring. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery, it mounts on standard DIN rails
This 2-pole miniature circuit breaker from the Siemens 5SJ4 series provides overcurrent protection for branch circuits in industrial control panels, HVAC equipment, and machinery. Rated 32 A with a C-Curve trip characteristic, it is UL489 listed for 240V AC and 60V DC applications up to 14 kA. The screw clamp terminals facilitate secure wiring, and the unit mounts on standard DIN rails
Siemens
This 2-pole miniature circuit breaker from the Siemens 5SJ4 series provides overcurrent protection for branch circuits in industrial control panels, HVAC equipment, and machinery. Rated 32 A with a C-Curve trip characteristic, it is UL489 listed for 240V AC and 60V DC applications up to 14 kA. The screw clamp terminals facilitate secure wiring, and the unit mounts on standard DIN rails
This 2-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 1.6 A 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 distribution boards
Siemens
This 2-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 1.6 A 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 distribution boards
Siemens 5SJ4 series miniature circuit breaker, 15 A, C-curve, 2-pole, UL489 listed for DIN-rail mounting. Rated 10kA at 277/480V AC and 125V DC, with screw clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery
Siemens
Siemens 5SJ4 series miniature circuit breaker, 15 A, C-curve, 2-pole, UL489 listed for DIN-rail mounting. Rated 10kA at 277/480V AC and 125V DC, with screw clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery
This 2-pole miniature circuit breaker features a C-Curve trip characteristic for moderate inrush loads. Rated 1A, 10kA at 277/480V AC and 125V DC, with screw clamp terminals. UL489 listed for DIN rail mounting. Suitable for overcurrent protection in industrial control panels, lighting circuits, and motor branch circuits
Siemens
This 2-pole miniature circuit breaker features a C-Curve trip characteristic for moderate inrush loads. Rated 1A, 10kA at 277/480V AC and 125V DC, with screw clamp terminals. UL489 listed for DIN rail mounting. Suitable for overcurrent protection in industrial control panels, lighting circuits, and motor branch circuits
This 2-pole miniature circuit breaker features a C-curve trip characteristic for moderate inrush currents. Rated 32 A with a maximum AIR of 10kA at 277/480V AC and DC voltage rating of 125V DC. Terminal connection is screw clamp. Suitable for branch circuit protection in industrial and commercial panels
Siemens
This 2-pole miniature circuit breaker features a C-curve trip characteristic for moderate inrush currents. Rated 32 A with a maximum AIR of 10kA at 277/480V AC and DC voltage rating of 125V DC. Terminal connection is screw clamp. Suitable for branch circuit protection in industrial and commercial panels