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SIEMENS 5SJ41258HG42 D-Curve 1-Pole UL489 DIN Rail-Mount - D-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensD-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

SIEMENS 5SJ41258HG42 D-Curve 1-Pole UL489 DIN Rail-Mount

The SIEMENS IEC Miniature Circuit Breaker (SKU 3G-OTH-22099) is a 25 A, 1-pole D-curve UL489 DIN rail-mount unit. It is rated for 277V AC (10kA AIR) and 60V DC, with screw-clamp terminals (MPN 5SJ41258HG42).

SKU 3G-OTH-22099

Brand
Siemens
Item
5SJ41258HG42 D-Curve 1-Pole UL489 DIN Rail-Mount
Category
D-Curve, 1-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
5SJ41258HG42
Type
10kA at 277V AC, Screw Clamp, 5SJ4, AC/DC
DC
60V
Max. AIR Rating
10kA at 277V AC
AC Voltage Rating
277V AC
DC Voltage Rating
60V 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 3G-OTH-22099) is a 25 A, 1-pole D-curve UL489 DIN rail-mount unit. It is rated for 277V AC (10kA AIR) and 60V DC, with screw-clamp terminals (MPN 5SJ41258HG42).

Frequently Asked Questions

What is the SIEMENS 5SJ41258HG42 miniature circuit breaker used for?

The SIEMENS 5SJ41258HG42 is a 25 A, 1-pole D-curve UL489 miniature circuit breaker used for overcurrent protection in industrial control panels, HVAC equipment, and machinery. It protects branch circuits rated up to 277V AC or 60V DC, with a 10kA interrupting rating at 277V AC.

What are the specifications of the SIEMENS 5SJ41258HG42?

This SIEMENS IEC miniature circuit breaker is rated 25 A, 1-pole, D-curve, with screw-clamp terminals. AC voltage rating is 277V AC with a 10kA interrupting rating; DC voltage rating is 60V DC. It is UL489 listed for DIN rail mounting and carries MPN 5SJ41258HG42.

Where to buy the SIEMENS 5SJ41258HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ41258HG42 miniature circuit breaker to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 25 A, 1-pole D-curve UL489 breaker.

How to install the SIEMENS 5SJ41258HG42 on a DIN rail?

Snap the SIEMENS 5SJ41258HG42 onto a standard 35 mm DIN rail until the latch engages. Use a screwdriver to tighten the screw-clamp terminals to the torque specified on the breaker label. Ensure the circuit is de-energized before installation and 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 d-curve, 1-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 2A, D-Curve, 1-pole miniature circuit breaker is UL489 listed for DIN rail mounting. It provides overcurrent protection for branch circuits and control panels in AC systems up to 277V and DC systems up to 60V. The screw clamp terminals facilitate secure wiring connections
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This 2A, D-Curve, 1-pole miniature circuit breaker is UL489 listed for DIN rail mounting. It provides overcurrent protection for branch circuits and control panels in AC systems up to 277V and DC systems up to 60V. The screw clamp terminals facilitate secure wiring connections
This 1-pole miniature circuit breaker features a D-curve trip characteristic for protection of loads with high inrush currents, such as motors and transformers. Rated 1A, it is UL489 listed for DIN rail mounting and suitable for 277V AC or 60V DC systems with a 10kA interrupting rating at 277V AC. Terminal connection is via screw clamp
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for protection of loads with high inrush currents, such as motors and transformers. Rated 1A, it is UL489 listed for DIN rail mounting and suitable for 277V AC or 60V DC systems with a 10kA interrupting rating at 277V AC. Terminal connection is via screw clamp
This 1-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection. Rated 20A, 277V AC (10kA interrupting capacity) and 60V DC, with screw-clamp terminals. UL489 listed for DIN-rail mounting in industrial control panels, HVAC equipment, and lighting circuits
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection. Rated 20A, 277V AC (10kA interrupting capacity) and 60V DC, with screw-clamp terminals. UL489 listed for DIN-rail mounting in industrial control panels, HVAC equipment, and lighting circuits
This 1-pole D-curve miniature circuit breaker is rated 13 A and complies with UL489. It provides overcurrent protection for AC circuits up to 277V (10kA interrupting capacity) and DC circuits up to 60V. The screw-clamp terminals facilitate secure wiring in DIN rail-mounted industrial control panels and equipment
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This 1-pole D-curve miniature circuit breaker is rated 13 A and complies with UL489. It provides overcurrent protection for AC circuits up to 277V (10kA interrupting capacity) and DC circuits up to 60V. The screw-clamp terminals facilitate secure wiring in DIN rail-mounted industrial control panels and equipment
Siemens 5SJ4 series miniature circuit breaker, 1-pole, D-curve, rated 15A, 277V AC and 60V DC. UL489 listed for branch circuit protection. Maximum interrupting rating 10kA at 277V AC. Screw clamp terminals for secure wiring. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and DC power systems
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Siemens 5SJ4 series miniature circuit breaker, 1-pole, D-curve, rated 15A, 277V AC and 60V DC. UL489 listed for branch circuit protection. Maximum interrupting rating 10kA at 277V AC. Screw clamp terminals for secure wiring. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and DC power systems
This 1-pole miniature circuit breaker features a D-curve trip characteristic for applications with high inrush currents, such as motor and transformer circuits. Rated 10A, it provides overcurrent protection in AC systems up to 277V (10kA interrupting capacity) and DC systems up to 60V. The screw-clamp terminals facilitate secure wiring in DIN rail-mounted panels
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for applications with high inrush currents, such as motor and transformer circuits. Rated 10A, it provides overcurrent protection in AC systems up to 277V (10kA interrupting capacity) and DC systems up to 60V. The screw-clamp terminals facilitate secure wiring in DIN rail-mounted panels

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This 1-pole D-curve miniature circuit breaker is UL489 listed for branch circuit protection. Rated 10A, 240V AC (14kA interrupting capacity) and 60V DC. Screw-clamp terminals for secure wiring. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery
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This 1-pole D-curve miniature circuit breaker from the Siemens 5SJ4 series is rated 63A at 240V AC (10kA AIR) and 60V DC. It features screw-clamp terminals for secure wiring and is UL489 listed for DIN rail mounting. Suitable for overcurrent protection in industrial control panels, machinery, and power distribution systems
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This 1-pole D-curve miniature circuit breaker from the Siemens 5SJ4 series is rated 63A at 240V AC (10kA AIR) and 60V DC. It features screw-clamp terminals for secure wiring and is UL489 listed for DIN rail mounting. Suitable for overcurrent protection in industrial control panels, machinery, and power distribution systems
SIEMENS IEC Miniature Circuit Breaker: 32 A Amps, 60V DC, 10kA at 240V AC, Screw Clamp, 5SJ4, AC/DC (MPN 5SJ41328HG40)
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