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Siemens 5SJ43407HG42 C-Curve 3-Pole UL489 DIN Rail-Mount - C-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensC-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens 5SJ43407HG42 C-Curve 3-Pole UL489 DIN Rail-Mount

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
5SJ43407HG42 C-Curve 3-Pole UL489 DIN Rail-Mount
Category
C-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
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

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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.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This 3-pole miniature circuit breaker is rated 30 A with a C-curve trip characteristic. It provides overcurrent protection for branch circuits in commercial and industrial applications, and is suitable for DC circuits up to 125 V. The unit features screw clamp terminals and is UL489 listed for DIN rail mounting
Siemens
This 3-pole miniature circuit breaker is rated 30 A with a C-curve trip characteristic. It provides overcurrent protection for branch circuits in commercial and industrial applications, and is suitable for DC circuits up to 125 V. The unit features screw clamp terminals and is UL489 listed for DIN rail mounting
This 3-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for branch circuit protection. Rated 32A with a maximum interrupting capacity of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals for secure wiring. Suitable for overcurrent protection in industrial control panels, lighting circuits, and motor branch circuits
Siemens
This 3-pole miniature circuit breaker features a C-Curve trip characteristic and is UL489 listed for branch circuit protection. Rated 32A with a maximum interrupting capacity of 10kA at 277/480V AC and 125V DC, it uses screw clamp terminals for secure wiring. Suitable for overcurrent protection in industrial control panels, lighting circuits, and motor branch circuits
3-pole miniature circuit breaker rated 35 A with C-curve trip characteristic. UL489 listed for DIN rail mounting. Maximum interrupting rating 10 kA at 277/480 V AC; DC voltage rating 125 V DC. Screw clamp terminals. Suitable for branch circuit protection in distribution panels and motor control centers
Siemens
3-pole miniature circuit breaker rated 35 A with C-curve trip characteristic. UL489 listed for DIN rail mounting. Maximum interrupting rating 10 kA at 277/480 V AC; DC voltage rating 125 V DC. Screw clamp terminals. Suitable for branch circuit protection in distribution panels and motor control centers
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 Siemens miniature circuit breaker is a 25 A, D-Curve, 3-pole unit with UL489 listing for DIN rail mounting. It provides overcurrent protection with a maximum interrupting rating of 10kA at 277/480V AC and a DC voltage rating of 125V DC. The screw clamp terminals facilitate secure wiring connections in industrial control panels and motor circuits
Siemens
This Siemens miniature circuit breaker is a 25 A, D-Curve, 3-pole unit with UL489 listing for DIN rail mounting. It provides overcurrent protection with a maximum interrupting rating of 10kA at 277/480V AC and a DC voltage rating of 125V DC. The screw clamp terminals facilitate secure wiring connections in industrial control panels and motor 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

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Three-pole miniature circuit breaker with C-curve trip characteristic for overcurrent protection. Rated 0.5 A at 240V AC or 60V DC with a 14 kA interrupting capacity. UL489 listed for branch circuit protection in industrial control panels, machinery, and DC power systems. Screw clamp terminals for secure wiring
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Three-pole miniature circuit breaker with C-curve trip characteristic for overcurrent protection. Rated 0.5 A at 240V AC or 60V DC with a 14 kA interrupting capacity. UL489 listed for branch circuit protection in industrial control panels, machinery, and DC power systems. Screw clamp terminals for secure wiring
Three-pole miniature circuit breaker with C-curve trip characteristic, rated 60 A. UL489 listed for DIN rail mounting. Interrupting capacity 10 kA at 240V AC and 60V DC. Screw clamp terminals. Suitable for branch circuit protection in industrial control panels and DC power distribution systems
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Three-pole miniature circuit breaker with C-curve trip characteristic, rated 60 A. UL489 listed for DIN rail mounting. Interrupting capacity 10 kA at 240V AC and 60V DC. Screw clamp terminals. Suitable for branch circuit protection in industrial control panels and DC power distribution systems
This 3-pole miniature circuit breaker features a C-Curve trip characteristic for overcurrent protection in branch circuits. Rated 50A with a maximum interrupting capacity of 10kA at 240V AC and 125V DC, it is UL489 listed for use in industrial control panels and machinery. Screw clamp terminals facilitate secure wiring in DIN-rail mounted enclosures
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This 3-pole miniature circuit breaker features a C-Curve trip characteristic for overcurrent protection in branch circuits. Rated 50A with a maximum interrupting capacity of 10kA at 240V AC and 125V DC, it is UL489 listed for use in industrial control panels and machinery. Screw clamp terminals facilitate secure wiring in DIN-rail mounted enclosures
This 3-pole miniature circuit breaker features a C-curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 20 A at 60V DC with a 10 kA interrupting capacity, it uses screw clamp terminals for secure wiring connections. Suitable for overcurrent protection in DC control panels, industrial machinery, and power distribution systems
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This 3-pole miniature circuit breaker features a C-curve trip characteristic and is UL489 listed for DIN rail mounting. Rated 20 A at 60V DC with a 10 kA interrupting capacity, it uses screw clamp terminals for secure wiring connections. Suitable for overcurrent protection in DC control panels, industrial machinery, and power distribution systems
This 3-pole miniature circuit breaker is rated 1A with a C-Curve trip characteristic. It provides overcurrent protection for branch circuits in commercial and industrial applications, with a maximum interrupting rating of 14kA at 240V AC and a DC voltage rating of 125V DC. The screw clamp terminals facilitate secure wiring connections on DIN rail mountings
Siemens
This 3-pole miniature circuit breaker is rated 1A with a C-Curve trip characteristic. It provides overcurrent protection for branch circuits in commercial and industrial applications, with a maximum interrupting rating of 14kA at 240V AC and a DC voltage rating of 125V DC. The screw clamp terminals facilitate secure wiring connections on DIN rail mountings
This Siemens miniature circuit breaker is a 3-pole, C-curve device rated at 0.3 A with a DC voltage rating of 60V DC and a maximum AIR rating of 10 kA. It features screw clamp terminals and is UL489 listed for DIN rail mounting. Typical applications include overcurrent and short-circuit protection in industrial control panels, machinery, and power distribution systems
Siemens
This Siemens miniature circuit breaker is a 3-pole, C-curve device rated at 0.3 A with a DC voltage rating of 60V DC and a maximum AIR rating of 10 kA. It features screw clamp terminals and is UL489 listed for DIN rail mounting. Typical applications include overcurrent and short-circuit protection in industrial control panels, machinery, and power distribution systems
This 3-pole miniature circuit breaker is rated 3A with a C-Curve trip characteristic. It has a maximum AIR rating of 14kA at 240V AC and a DC voltage rating of 125V DC. The terminal connection uses screw clamps. Typical applications include branch circuit protection in industrial control panels and distribution boards
Siemens
This 3-pole miniature circuit breaker is rated 3A with a C-Curve trip characteristic. It has a maximum AIR rating of 14kA at 240V AC and a DC voltage rating of 125V DC. The terminal connection uses screw clamps. Typical applications include branch circuit protection in industrial control panels and distribution boards
This 3-pole miniature circuit breaker features a C-curve trip characteristic for overcurrent protection in commercial and industrial applications. Rated 16A with a maximum interrupting rating of 14kA at 240V AC and 125V DC, it is suitable for AC and DC circuits. The screw clamp terminal connection ensures secure wiring. Typical uses include branch circuit protection in distribution panels and control circuits
Siemens
This 3-pole miniature circuit breaker features a C-curve trip characteristic for overcurrent protection in commercial and industrial applications. Rated 16A with a maximum interrupting rating of 14kA at 240V AC and 125V DC, it is suitable for AC and DC circuits. The screw clamp terminal connection ensures secure wiring. Typical uses include branch circuit protection in distribution panels and control circuits