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circuit-breaker

Siemens 5SX2103-8 Circuit Breaker, 3A, 1-Pole, 400V

★★★★★
Part Number 5SX2103-8
Amperes 3
Poles 1
Voltage 400
Product Type circuit-breaker
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Manufacturer :Siemens
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Replacement available
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Picture available on request
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CSA / UL Approved
Regular price $460.00
Sale price $460.00 Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.

Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.

Icon
Secure transaction
Icon
FREE & fast shipping on orders over $49
Icon
CSA approved with 1 year warranty
Icon
30 day returns
Siemens 5SX2103-8 Circuit Breaker 3A 1-Pole 400V - Circuit Breakers

Siemens 5SX2103-8 Circuit Breaker, 3A, 1-Pole, 400V

Regular price $460.00
Sale price $460.00 Regular price
Unit price
Product description
Shipping

Meet the Siemens 5SX2103-8 Circuit Breaker—an intentionally compact, dependable protection device built for industrial electrical service, maintenance, and replacement projects. With a precise 3 A rating and a single-pole design, it delivers targeted overcurrent protection for individual circuits within 400 V networks, helping minimize downtime and keep critical equipment safe.

Why the 5SX2103-8 stands out

  • Exact part-number compatibility: The 5SX2103-8 is designed to integrate with Siemens panels and related systems. Verify fit by part number to ensure seamless operation in your application.
  • Low-current protection for reliability: A 3 A rating provides selective protection for control circuits, instrumentation feeders, and other low-load circuits, reducing unnecessary trips in busy industrial environments.
  • Efficient single-pole form factor: The 1-pole design simplifies installation in standard control panels, MCCs, and distributed circuits where space and simplicity matter.
  • 400 V readiness: Rated for 400 V systems, this breaker is suited to common industrial and European-style power distributions, delivering consistent performance under demanding conditions.
  • Trusted Siemens engineering: Backed by Siemens’ engineering standards, this breaker emphasizes reliability, compatibility, and long service life in industrial settings.

Ideal use cases

  • Replacement and retrofit projects in Siemens-based panels and switchgear within manufacturing or process environments.
  • Protection for small feeders, control circuits, and instrumentation lines in 400 V distribution networks.
  • New installations in industrial automation setups where a precise 3 A, 1-pole breaker is appropriate for the circuit being protected.

How to ensure fit and install

Before installation, confirm compatibility by the part number 5SX2103-8 and review your application requirements. If you’re unsure about compatibility or need help matching a part number to your equipment, send us a message and we’ll assist in validating fit for your specific setup.

Specifications

  • Manufacturer: Siemens
  • Part Number: 5SX2103-8
  • Product Type: Circuit Breaker
  • Amperage: 3 A
  • Poles: 1
  • Voltage: 400 V

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What Our Customers Say

4.9 (38 reviews)

General feedback we often hear from customers purchasing industrial electrical parts.

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Professional-grade feel. No issues reported during commissioning.

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