ABB S303P-Z1.6NA miniature circuit breaker with a 1.6 A rating, Type Z tripping characteristic, 3P+N configuration and 25 kA breaking capacity for protecting sensitive industrial electrical equipment.
£268.21
The ABB 2CDS383103R0258, also known as the S303P-Z1.6NA, is a premium miniature circuit breaker (MCB) designed to provide highly sensitive protection against overloads and short circuits in industrial and commercial electrical installations. As part of ABB's trusted S300P System pro M compact range, it combines exceptional fault-clearing performance, international approvals and a compact DIN rail design for demanding applications.
Featuring a 3P+N configuration, the S303P-Z1.6NA protects all three phase conductors while incorporating a switched neutral pole. Its Type Z tripping characteristic is specifically designed for highly sensitive electronic equipment, PLCs, instrumentation and semiconductor circuits that require rapid disconnection under even relatively small fault currents.
With a rated current of 1.6 A, a rated operating voltage of 415 V AC, a 25 kA rated short-circuit breaking capacity (Icn) and a 100 kA ultimate breaking capacity (Icu), the ABB S303P-Z1.6NA delivers dependable protection for industrial automation systems, machine control panels and OEM equipment.
The ABB S303P-Z1.6NA combines thermal overload protection with extremely fast magnetic short-circuit protection to safeguard sensitive electronic equipment, PLC systems, instrumentation and semiconductor devices from electrical faults while minimising downtime and improving operational safety.
Its Type Z characteristic trips significantly faster than conventional Type B or Type C breakers, making it particularly suitable where even relatively small overcurrents could damage valuable electronic components or control systems.
| Current | 1.6 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S300P System pro M compact |
| Model | S303P-Z1.6NA |
| Manufacturer Part Number | 2CDS383103R0258 |
| Product Type | Miniature Circuit Breaker (MCB) |
| Rated Current | 1.6 A |
| Tripping Characteristic | Type Z |
| Pole Configuration | 3P+N |
| Protected Poles | 3 |
| Rated Voltage | 415 V AC |
| Maximum Operating Voltage | 480Y/277 V AC, 125 V DC |
| Voltage Type | AC/DC |
| Frequency | 50 / 60 Hz |
| Rated Short-Circuit Breaking Capacity (Icn) | 25 kA |
| Ultimate Breaking Capacity (Icu) | 100 kA |
| Rated Insulation Voltage (Ui) | 500 V |
| Impulse Withstand Voltage (Uimp) | 6 kV |
| Protection Rating | IP20 |
| Terminal Capacity | 0.75–35 mm² rigid, 0.75–25 mm² flexible |
| Mounting | DIN Rail |
| Operating Temperature | -40°C to +70°C |
| Electrical Endurance | 20,000 operating cycles |
| Dimensions (H × W × D) | Approx. 88 × 70 × 69 mm |
| Weight | Approx. 0.496 kg |
| EAN | 4016779077132 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects sensitive three-phase electrical circuits against overloads and short circuits, particularly electronic equipment, PLCs and instrumentation systems.
The ABB S303P-Z1.6NA has a rated operational current of 1.6 A.
Type Z circuit breakers provide extremely fast magnetic tripping, making them ideal for protecting highly sensitive electronic circuits with very low overcurrent tolerance.
The breaker provides a rated short-circuit breaking capacity of 25 kA and an ultimate breaking capacity of 100 kA.
It is designed for installation on a standard DIN rail inside industrial control panels, switchboards and electrical distribution boards.
ABB S300P miniature circuit breakers are trusted by industrial engineers, panel builders and OEM manufacturers worldwide for dependable overload and short-circuit protection in demanding electrical installations and sensitive automation systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...