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2CDS383103R0318 ABB S303P-Z3NA Miniature Circuit Breaker – 3+NP – Z – 3 A
ABB S303P-Z3NA miniature circuit breaker with a 3 A current rating, Type Z tripping characteristic, 3P+N configuration and high breaking capacity for industrial circuit protection.
£147.52
Why Choose the ABB S303P-Z3NA Miniature Circuit Breaker?
The ABB S303P-Z3NA, product code 2CDS383103R0318, is a high-performance miniature circuit breaker (MCB) designed to protect industrial electrical installations against overloads and short circuits. As part of the dependable ABB System pro M compact S300P series, it provides reliable circuit protection for demanding applications where high breaking capacity and precise tripping performance are required.
This miniature circuit breaker combines a delayed thermal tripping mechanism for overload protection with an electromagnetic tripping mechanism for rapid short-circuit protection. Its Type Z tripping characteristic offers highly sensitive protection, making it particularly suitable for circuits containing electronic equipment, control devices, PLC systems and other components with low short-circuit withstand levels.
With a rated current of 3 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-Z3NA is suitable for three-phase industrial distribution and control circuits. Its DIN rail mounting design, integrated trip indication and compatibility with ABB System pro M compact accessories simplify installation, maintenance and system expansion.
Key Advantages
- Reliable protection against overloads and short circuits.
- 3 A rated current for low-current industrial and control circuits.
- Type Z tripping characteristic for sensitive electronic equipment.
- 3P+N configuration for three-phase circuits with a switched neutral.
- High 25 kA breaking capacity for demanding installations.
- Compact DIN rail mounting for straightforward panel installation.
Key Features
- ABB System pro M compact S300P series.
- 3 A nominal current rating.
- Type Z instantaneous tripping characteristic.
- Three protected poles plus switched neutral.
- Rated operational voltage up to 415 V AC.
- High short-circuit breaking capacity of up to 25 kA.
- Integrated trip position indicator for easier fault identification.
- Compatible with ABB System pro M compact auxiliary accessories.
Sensitive Circuit Protection for Industrial Systems
Miniature circuit breakers automatically disconnect an electrical circuit when excessive current is detected. Thermal protection responds to sustained overload conditions, while electromagnetic protection operates rapidly during short circuits, helping prevent cable damage, equipment failure and potentially hazardous electrical faults.
The Type Z characteristic of the ABB S303P-Z3NA is designed for applications requiring a particularly fast response to relatively low levels of fault current. This makes the breaker well suited to protecting sensitive electronic loads, semiconductor devices, instrumentation and industrial control equipment.
Typical Applications
- Industrial control panels and distribution boards.
- PLC, instrumentation and automation circuits.
- Electronic equipment and semiconductor protection.
- Machine control and manufacturing systems.
- Three-phase circuits with switched neutral conductors.
- Commercial and industrial electrical installations.
Technical Specifications
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| Current | 3 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-Z3NA | |
| Product ID | 2CDS383103R0318 | |
| Product type | Miniature circuit breaker | |
| Rated current | 3 A | |
| Tripping characteristic | Type Z | |
| Number of poles | 3P+N | |
| Rated operational voltage | Up to 415 V AC | |
| Breaking capacity | Up to 25 kA | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 installed, up to IP40 in a suitable enclosure | |
| Mounting type | DIN rail mounting | |
| Operating temperature | -40 to +70 °C | |
| Approximate dimensions (H × W × D) | 88 × 70 × 69 mm | |
| Net weight | approx. 0.37 kg | |
| EAN | 4016779077095 | |
| Country of origin | Germany | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S303P-Z3NA used for?
The ABB S303P-Z3NA protects industrial electrical circuits and connected equipment against overloads and short circuits.
What is the current rating of this circuit breaker?
The S303P-Z3NA has a rated current of 3 A.
What does the Type Z tripping characteristic mean?
Type Z breakers provide highly sensitive short-circuit protection and are commonly used for electronic equipment, semiconductor devices and industrial control circuits.
How many poles does the S303P-Z3NA have?
The breaker has a 3P+N configuration, providing three protected phase poles and a simultaneously switched neutral pole.
How is this miniature circuit breaker installed?
The S303P-Z3NA is designed for mounting on a standard DIN rail inside an electrical distribution board, control cabinet or industrial enclosure.
Trusted Industrial Protection from ABB
ABB System pro M compact miniature circuit breakers are widely specified by electrical engineers, panel builders and automation professionals for reliable protection, high technical performance and compatibility with modern industrial installations.
