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Siemens 5SJ41458HG40 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 5SJ41458HG40 D-Curve 1-Pole UL489 DIN Rail-Mount

The SIEMENS IEC Miniature Circuit Breaker (SKU 5SJ41458HG40, MPN 5SJ41458HG40) is a 45 A, 1-pole D-curve UL489 DIN rail-mount unit. It is rated for 240V AC (10kA AIR) and 60V DC, with screw-clamp terminals.

SKU 3G-OTH-22115

Brand
Siemens
Item
5SJ41458HG40 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
5SJ41458HG40
Type
10kA at 240V AC, Screw Clamp, 5SJ4, AC/DC
DC
60V
Max. AIR Rating
10kA at 240V AC
AC Voltage Rating
240V 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 5SJ41458HG40, MPN 5SJ41458HG40) is a 45 A, 1-pole D-curve UL489 DIN rail-mount unit. It is rated for 240V AC (10kA AIR) and 60V DC, with screw-clamp terminals.

Frequently Asked Questions

What is the SIEMENS 5SJ41458HG40 miniature circuit breaker used for?

The SIEMENS 5SJ41458HG40 is a 45 A, 1-pole D-curve UL489 miniature circuit breaker used for overcurrent protection in industrial control panels, HVAC equipment, and DC power systems. It mounts on a DIN rail and handles both 240V AC and 60V DC circuits.

What are the specifications of the SIEMENS 5SJ41458HG40?

The SIEMENS 5SJ41458HG40 is a 45 A, 1-pole D-curve miniature circuit breaker with a max. AIR rating of 10kA at 240V AC. It is rated for 240V AC and 60V DC, uses screw-clamp terminals, and is UL489 listed for DIN-rail mounting.

Where to buy the SIEMENS 5SJ41458HG40 worldwide?

You can source the SIEMENS 5SJ41458HG40 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.

How to install the SIEMENS 5SJ41458HG40 miniature circuit breaker?

Snap the SIEMENS 5SJ41458HG40 onto a standard DIN rail until it locks. Connect line and load wires to the screw-clamp terminals, torquing to the manufacturer's specification. 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 1-pole miniature circuit breaker features a D-curve trip characteristic for high-inrush loads such as motors and transformers. Rated 35 A, 240V AC and 60V DC, with a maximum interrupting rating of 10kA at 240V AC. UL489 listed for DIN rail mounting, with screw-clamp terminals
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for high-inrush loads such as motors and transformers. Rated 35 A, 240V AC and 60V DC, with a maximum interrupting rating of 10kA at 240V AC. UL489 listed for DIN rail mounting, with screw-clamp terminals
30 A, 1-pole D-curve miniature circuit breaker with UL489 listing for DIN rail mounting. Rated 240 V AC with 10 kA interrupting capacity and 60 V DC. Screw-clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery
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30 A, 1-pole D-curve miniature circuit breaker with UL489 listing for DIN rail mounting. Rated 240 V AC with 10 kA interrupting capacity and 60 V DC. Screw-clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery
Siemens 5SJ4 series miniature circuit breaker, 1-pole, D-curve, rated 50A at 240V AC with 10kA interrupting capacity and 60V DC. UL489 listed for DIN rail mounting. Screw clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and DC circuits
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Siemens 5SJ4 series miniature circuit breaker, 1-pole, D-curve, rated 50A at 240V AC with 10kA interrupting capacity and 60V DC. UL489 listed for DIN rail mounting. Screw clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and DC circuits
Single-pole D-curve miniature circuit breaker rated 15 A, 240 V AC (14 kA interrupting rating) and 60 V DC. UL489 listed for DIN-rail mounting with screw-clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and DC power systems
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Single-pole D-curve miniature circuit breaker rated 15 A, 240 V AC (14 kA interrupting rating) and 60 V DC. UL489 listed for DIN-rail mounting with screw-clamp terminals. 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 overcurrent protection in circuits with high inrush currents. Rated 13A, 240V AC (14kA AIR) and 60V DC, it uses screw-clamp terminals and is UL489 listed for DIN rail mounting. Suitable for industrial control panels, HVAC equipment, and DC circuits
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents. Rated 13A, 240V AC (14kA AIR) and 60V DC, it uses screw-clamp terminals and is UL489 listed for DIN rail mounting. Suitable for industrial control panels, HVAC equipment, and DC circuits
1-pole D-curve miniature circuit breaker rated 20 A, 240 V AC (14 kA interrupting capacity) and 60 V DC. UL489 listed for DIN-rail mounting with screw-clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery
Siemens
1-pole D-curve miniature circuit breaker rated 20 A, 240 V AC (14 kA interrupting capacity) and 60 V DC. UL489 listed for DIN-rail mounting with screw-clamp terminals. Suitable for overcurrent protection in industrial control panels, HVAC equipment, and machinery

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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 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
This 30 A, 1-pole D-curve miniature circuit breaker from the Siemens 5SJ4 series is UL489 listed for DIN rail mounting. It provides overcurrent protection for branch circuits rated up to 277V AC or 60V DC, with a maximum interrupting rating of 10kA at 277V AC. Terminal connection is via screw clamp. Typical applications include industrial control panels, HVAC equipment, and machinery
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This 30 A, 1-pole D-curve miniature circuit breaker from the Siemens 5SJ4 series is UL489 listed for DIN rail mounting. It provides overcurrent protection for branch circuits rated up to 277V AC or 60V DC, with a maximum interrupting rating of 10kA at 277V AC. Terminal connection is via screw clamp. Typical applications include industrial control panels, HVAC equipment, and machinery
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
This 1-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents. Rated 25A, it is UL489 listed for DIN rail mounting and accepts 277V AC (10kA interrupting rating) or 60V DC. Screw-clamp terminals facilitate secure wiring in industrial control panels, HVAC equipment, and machinery branch circuits
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents. Rated 25A, it is UL489 listed for DIN rail mounting and accepts 277V AC (10kA interrupting rating) or 60V DC. Screw-clamp terminals facilitate secure wiring in industrial control panels, HVAC equipment, and machinery branch circuits
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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SIEMENS IEC Miniature Circuit Breaker: 32 A Amps, 60V DC, 10kA at 240V AC, Screw Clamp, 5SJ4, AC/DC (MPN 5SJ41328HG40)
This 1-pole miniature circuit breaker features a D-curve trip characteristic for high inrush applications. Rated 60 A, 240V AC with 10kA interrupting capacity and 60V DC, it uses screw-clamp terminals. UL489 listed for branch circuit protection in industrial and commercial panels, it mounts on standard DIN rail
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for high inrush applications. Rated 60 A, 240V AC with 10kA interrupting capacity and 60V DC, it uses screw-clamp terminals. UL489 listed for branch circuit protection in industrial and commercial panels, it mounts on standard DIN rail
This 1-pole D-curve miniature circuit breaker is UL489 listed for DIN rail mounting. Rated 6A with 14kA interrupting capacity at 240V AC and 60V DC, it uses screw-clamp terminals. Typical applications include branch circuit protection in industrial control panels, HVAC equipment, and machinery where high inrush currents occur
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This 1-pole D-curve miniature circuit breaker is UL489 listed for DIN rail mounting. Rated 6A with 14kA interrupting capacity at 240V AC and 60V DC, it uses screw-clamp terminals. Typical applications include branch circuit protection in industrial control panels, HVAC equipment, and machinery where high inrush currents occur
This 1-pole miniature circuit breaker features a D-curve trip characteristic for high inrush loads. Rated 0.5 A, it is UL489 listed for branch circuit protection in industrial control panels, HVAC equipment, and lighting systems. Suitable for both AC (277V) and DC (60V) applications with a 10kA interrupting rating at 277V AC. Terminals are screw clamp type for secure wiring
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This 1-pole miniature circuit breaker features a D-curve trip characteristic for high inrush loads. Rated 0.5 A, it is UL489 listed for branch circuit protection in industrial control panels, HVAC equipment, and lighting systems. Suitable for both AC (277V) and DC (60V) applications with a 10kA interrupting rating at 277V AC. Terminals are screw clamp type for secure wiring