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Siemens 5SJ4 Series 30A 1-Pole D-Curve UL489 Miniature Circuit Breaker - D-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensD-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens 5SJ4 Series 30A 1-Pole D-Curve UL489 Miniature Circuit Breaker

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ41308HG42) is a 30 A, 1-pole D-curve UL489 DIN rail-mount unit from the 5SJ4 series. It is rated for 277V AC with a maximum AIR of 10kA at 277V AC and 60V DC…

SKU 3G-OTH-22155

Brand
Siemens
Item
5SJ4 Series 30A 1-Pole D-Curve UL489 Miniature Circuit Breaker
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
5SJ41308HG42
Series
5SJ4
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

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

Product Description

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ41308HG42) is a 30 A, 1-pole D-curve UL489 DIN rail-mount unit from the 5SJ4 series. It is rated for 277V AC with a maximum AIR of 10kA at 277V AC and 60V DC, featuring screw-clamp terminals.

Frequently Asked Questions

What is the SIEMENS 5SJ41308HG42 miniature circuit breaker used for?

The SIEMENS 5SJ41308HG42 is a 30 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 5SJ41308HG42?

The SIEMENS 5SJ41308HG42 is a 30 A, 1-pole D-curve miniature circuit breaker from the 5SJ4 series. It is rated 277V AC and 60V DC, with a maximum AIR of 10kA at 277V AC. Terminal connection is screw clamp. It is UL489 listed for DIN rail mounting.

Where to buy the SIEMENS 5SJ41308HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ41308HG42 miniature circuit breaker to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 30 A, 1-pole D-curve unit.

How to install the SIEMENS 5SJ41308HG42 on a DIN rail?

To install the SIEMENS 5SJ41308HG42, snap the circuit breaker onto a standard 35 mm DIN rail until the latch engages. Ensure the unit is oriented with the line supply connected to the top terminal. Use a screwdriver to tighten the screw-clamp terminals to the torque specified on the device label.

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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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
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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
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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 miniature circuit breaker from the Siemens 5SJ4 series features a D tripping curve and is UL489 listed for DIN rail mounting. Rated at 1.6 A with a maximum interrupting rating of 10 kA at 277 V AC, it also supports DC applications up to 60 V. The screw clamp terminals facilitate secure wiring in industrial control panels and equipment branch circuits
This Siemens 5SJ4 series miniature circuit breaker is a 1-pole, D-curve unit rated 5A for 277V AC or 60V DC. It has a maximum interrupting rating of 10kA at 277V AC and features screw-clamp terminals. Designed for DIN rail mounting, it is UL489 listed and suitable for branch circuit protection in industrial control panels, HVAC equipment, and machinery
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This Siemens 5SJ4 series miniature circuit breaker is a 1-pole, D-curve unit rated 5A for 277V AC or 60V DC. It has a maximum interrupting rating of 10kA at 277V AC and features screw-clamp terminals. Designed for DIN rail mounting, it is UL489 listed and suitable for branch circuit protection in industrial control panels, HVAC equipment, and machinery
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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

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