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2CDS383103R0044 ABB S303P-C4NA Miniature Circuit Breaker - 3+NP - C - 4 A

2CDS383103R0044 ABB S303P-C4NA Miniature Circuit Breaker – 3+NP – C – 4 A

ABB S303P-C4NA 3P+N miniature circuit breaker with a 4 A rated current, Type C tripping characteristic and 25 kA breaking capacity for industrial control and distribution circuits.

SKU: 2CDS383103R0044Alt SKU: S303P-C4NAMPN: 2CDS383103R0044
Price
List Price £177.88 ex VAT
Your Price (ex VAT)
£177.88
Manufacturer Lead Time Estimated Delivery 14 weeks
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Manufacturer Lead Time

£177.88

Why Choose the ABB S303P-C4NA Miniature Circuit Breaker?

The ABB S303P-C4NA (2CDS383103R0044) is a premium three-phase plus switched neutral (3P+N) miniature circuit breaker (MCB) designed to protect industrial and commercial electrical installations against overloads and short circuits. As part of the trusted ABB S300P series, it combines dependable circuit protection with a high breaking capacity, making it ideal for distribution boards, switchgear, automation systems and OEM machinery.

Manufactured in accordance with international IEC and UL standards, the S303P-C4NA features a compact DIN rail design, fail-safe cylinder-lift screw terminals and flexible top or bottom supply connections. Its switched neutral configuration enables simultaneous isolation of the neutral conductor while protecting all three phase conductors.

With a rated current of 4 A, a Type C tripping characteristic and a rated short-circuit breaking capacity of 25 kA, the S303P-C4NA is ideal for low-current three-phase control circuits, instrumentation, automation systems and industrial equipment requiring switched neutral isolation.

Key Advantages

  • Industrial-grade 3P+N miniature circuit breaker.
  • 4 A rated current for low-current industrial circuits.
  • Type C tripping characteristic for moderate inrush currents.
  • 25 kA short-circuit breaking capacity.
  • Switched neutral enables simultaneous isolation of all conductors.
  • Compact DIN rail mounting simplifies panel assembly.

Key Features

  • ABB S300P series.
  • 3 protected poles + switched neutral (3P+N).
  • 4 A rated current.
  • Type C tripping characteristic.
  • Rated operating voltage: 415 V AC.
  • 25 kA rated breaking capacity.
  • Rated insulation voltage: 500 V.
  • Rated impulse withstand voltage: 6 kV.
  • Fail-safe cylinder-lift screw terminals.
  • Compatible with ABB System pro M Compact accessories.

Reliable Protection for Three-Phase Control Circuits

The ABB S303P-C4NA automatically disconnects electrical circuits during overload or short-circuit conditions, protecting cables, control equipment and connected devices while helping reduce downtime and maintenance costs.

Its Type C tripping characteristic accommodates moderate inrush currents, while the switched neutral pole provides complete circuit isolation, making it ideal for industrial automation, instrumentation, machinery and three-phase distribution circuits requiring neutral switching.

Typical Applications

  • Industrial automation systems.
  • Three-phase control panels.
  • Instrumentation circuits.
  • OEM machinery.
  • Distribution boards with switched neutral.
  • Industrial and commercial electrical installations.

Technical Specifications

Current 4 A
Phase Three Phase
Manufacturer ABB
Series S300P
Model S303P-C4NA
Product ID 2CDS383103R0044
EAN 4016779077422
Product type Miniature circuit breaker (MCB)
Rated current 4 A
Configuration 3P+N (3 protected poles + switched neutral)
Total number of poles 4
Number of protected poles 3
Tripping characteristic Type C
Rated AC voltage 415 V AC
Rated insulation voltage (Ui) 500 V
Rated impulse withstand voltage (Uimp) 6 kV
Rated short-circuit breaking capacity 25 kA
Frequency 50 / 60 Hz
Protection rating IP20
Mounting type DIN rail
Modular width 4 modules
Dimensions (H × W × D) Approx. 88 × 70 × 69 mm
Operating temperature -40°C to +70°C
Weight Approx. 0.496 kg
HS Code 85362010
Country of Manufacture Germany
Device Type MCB
Trip Curve C curve
Breaking Capacity 25 kA

Frequently Asked Questions

What is the ABB S303P-C4NA used for?

The S303P-C4NA protects three-phase electrical circuits against overloads and short circuits while providing switched neutral isolation, making it suitable for industrial control and distribution applications.

What is the rated current of this circuit breaker?

The ABB S303P-C4NA has a rated current of 4 A.

What does 3P+N mean?

3P+N indicates three protected phase poles with an additional switched neutral pole, allowing all conductors to be isolated simultaneously while only the phase conductors receive overload and short-circuit protection.

What is the breaking capacity of the S303P-C4NA?

The circuit breaker provides a rated short-circuit breaking capacity of 25 kA.

How is the ABB S303P-C4NA installed?

The breaker mounts directly onto a standard DIN rail and supports top or bottom supply connections using cables or compatible busbars.

Trusted by Industrial Professionals Worldwide

ABB S300P miniature circuit breakers are trusted by electrical engineers, panel builders and OEM manufacturers for dependable circuit protection, outstanding breaking performance and long-term reliability in demanding industrial installations.

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