Why Choose the ABB S303P-Z63 Miniature Circuit Breaker?
The ABB S303P-Z63 (2CDS383001R0608) is a premium three-pole miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in demanding industrial electrical installations. As part of the trusted ABB S300P series, it delivers rapid fault response, high breaking performance and reliable protection for sensitive three-phase electrical systems.
Manufactured to international IEC and UL standards, the S303P-Z63 is designed for industrial control panels, switchgear assemblies, OEM machinery and automation systems. Its compact DIN rail design, fail-safe screw terminals and flexible top or bottom supply connection enable straightforward installation and long-term reliability.
With a rated current of 63 A, a Type Z tripping characteristic and a rated ultimate short-circuit breaking capacity of 25 kA at 400/415 V AC, the S303P-Z63 is particularly suitable for protecting PLCs, instrumentation, semiconductor devices and other sensitive electronic equipment requiring rapid fault disconnection.
Key Advantages
- Industrial-grade three-pole miniature circuit breaker.
- 63 A rated current for demanding industrial applications.
- Type Z tripping characteristic for sensitive electronic equipment.
- 25 kA breaking capacity for outstanding fault protection.
- Fast magnetic trip protects delicate electronic circuits.
- Compact DIN rail mounting simplifies installation.
Key Features
- ABB S300P series.
- Three-pole configuration.
- 63 A rated current.
- Type Z tripping characteristic.
- Rated operating voltage up to 415 V AC.
- Maximum operating voltage up to 125 V DC.
- 25 kA rated ultimate short-circuit breaking capacity.
- Fail-safe cylinder-lift screw terminals.
- Top or bottom supply connection.
- Compatible with ABB System pro M Compact accessories.
Reliable Protection for Sensitive Electronic Equipment
The ABB S303P-Z63 automatically disconnects electrical circuits during overload or short-circuit conditions, helping protect PLCs, instrumentation, semiconductor devices, cables and sensitive control equipment from electrical damage while reducing downtime and maintenance costs.
Its Type Z tripping characteristic provides rapid magnetic operation at relatively low fault-current levels, making it ideal for industrial automation systems and electronic control circuits where fast fault clearance is essential.
Typical Applications
- PLC and industrial automation systems.
- Instrumentation and measurement equipment.
- Sensitive electronic circuits.
- Semiconductor protection.
- Industrial control panels.
- Machine building and OEM equipment.
