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2CDS383001R0318 ABB S303P-Z3 Miniature Circuit Breaker – 3P – Z – 3 A
ABB S303P-Z3 three-pole miniature circuit breaker with a 3 A rated current, Z curve tripping characteristic and 25 kA breaking capacity for sensitive industrial and electronic circuit protection.
£120.79
Why Choose the ABB S303P-Z3 Miniature Circuit Breaker?
The ABB S303P-Z3 is a high-performance three-pole miniature circuit breaker (MCB) engineered to protect sensitive electrical circuits against overloads and short circuits. As part of the trusted ABB System pro M compact S300P series, it delivers precise circuit protection, high fault interruption capability and dependable long-term reliability for industrial, commercial and OEM installations.
Manufactured in accordance with international IEC, UL and CSA standards, the S303P-Z3 features a compact DIN rail mounted design that enables fast installation inside switchboards, control panels and distribution boards. Its robust construction, secure screw terminals and front trip indication simplify installation and maintenance while ensuring safe operation.
Featuring a 3 A rated current, a Z curve tripping characteristic and a 25 kA breaking capacity, this miniature circuit breaker is particularly suited to protecting electronic equipment, semiconductor devices, PLCs, instrumentation and other sensitive circuits that require rapid disconnection at relatively low overcurrent levels.
Key Advantages
- Compact three-pole miniature circuit breaker for sensitive electrical circuits.
- 3 A rated current for precise low-current protection.
- Z curve tripping characteristic designed for electronic and control circuits.
- 25 kA breaking capacity for demanding industrial fault protection.
- Manufactured to IEC, UL and CSA standards.
- Quick installation on standard 35 mm DIN rail.
Key Features
- ABB System pro M compact S300P series.
- 3 A rated current.
- Three protected poles.
- Z curve tripping characteristic.
- 415 V AC rated operational voltage.
- 25 kA rated short-circuit breaking capacity (Icn).
- IP20 protection rating.
- 35 mm DIN rail mounting.
Rapid Protection for Sensitive Electrical Equipment
The ABB S303P-Z3 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect wiring, control equipment and sensitive electronic devices from damage. Its Z curve characteristic provides magnetic tripping at lower overcurrent levels than B, C, D or K curve circuit breakers, making it particularly suitable for delicate electronic applications.
The ABB S300P range is trusted worldwide by panel builders, automation specialists and industrial electrical contractors for its dependable performance, high fault interruption capability and compliance with international standards.
Typical Applications
- Electronic equipment and semiconductor circuits.
- PLC and industrial automation control panels.
- Instrumentation and measurement systems.
- Low-current control circuits.
- OEM machinery and production equipment.
- Commercial and industrial electrical distribution.
Technical Specifications
Tick the specs you need, then view products that match.
| Breaking Capacity | 25 kA | |
|---|---|---|
| Current | 3 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-Z3 | |
| SKU | 2CDS383001R0318 | |
| EAN | 4016779077897 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 3 A | |
| Tripping characteristic | Z Curve | |
| Number of poles | 3 | |
| Rated operational voltage | 415 V AC | |
| Maximum operating voltage | 480Y/277 V AC, 125 V DC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity (Icn) | 25 kA | |
| Ultimate breaking capacity (Icu) | 100 kA at 400/415 V AC | |
| Rated insulation voltage | 500 V | |
| Impulse withstand voltage | 6 kV | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm | |
| Weight | Approx. 372 g | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S303P-Z3 used for?
It protects sensitive three-phase electrical circuits against overloads and short circuits in electronic equipment, instrumentation and industrial control applications.
What is the rated current of this circuit breaker?
The ABB S303P-Z3 has a 3 A rated current.
What does the Z curve tripping characteristic mean?
A Z curve circuit breaker trips at relatively low overcurrent levels, making it ideal for sensitive electronic devices, semiconductor equipment and precision control circuits.
What is the breaking capacity?
The S303P-Z3 provides a 25 kA rated short-circuit breaking capacity (Icn) and an ultimate breaking capacity of up to 100 kA (Icu) at 400/415 V AC.
How is the ABB S303P-Z3 installed?
The breaker is designed for installation on a standard 35 mm DIN rail inside electrical distribution boards, switchboards and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted worldwide by electricians, automation engineers and panel builders for delivering precise circuit protection, outstanding fault performance and long operational life.
