Circuit Breaker with Surge Protection Acti9 Combi SPU 3P + N 50 A

The Acti9 Combi SPU 3P+N circuit breaker with surge protection from Schneider Electric is an advanced solution designed to ensure electrical safety and service continuity in small residential and commercial installations. This device combines a circuit breaker for short-circuit and overload protection with additional protection against transient surges, making it a robust and efficient option for comprehensive electrical installation protection.

With a nominal current of 50 A, this circuit breaker effectively protects against surges induced by atmospheric phenomena, such as lightning, redirecting the flow of transient surges to the ground. Moreover, the integrated C60 circuit breaker offers continuous protection against overloads and short circuits, providing an additional level of safety in electrical networks.

The Acti9 Combi SPU is designed to operate in alternating current (AC) networks with a TT earthing system and is suitable for installation in electrical panels with DIN rails. This device is compatible with 230/400 V networks and offers a high level of surge protection in both differential mode (between phase and neutral) and common mode (between neutral and earth), with protection levels less than or equal to 1.5 kV. This ensures that connected devices are protected against any unexpected voltage increase.

Regarding its discharge capacity, this circuit breaker can withstand a nominal discharge current of 15 kA and a maximum discharge current of 40 kA, making it ideal for handling large voltage spikes. The unit is equipped with type 2 transient suppressors, tested with an 8/20 µs impulse current wave, ensuring a fast and effective response to any voltage fluctuations.

This model is easy to install and operate thanks to its handle-operated control system and fixed mounting on a DIN rail. Additionally, it features visual signalling via LEDs to indicate the surge protection status, with green and red indicators, and a white and red flag for voltage release signalling. These features allow for easy monitoring of the circuit breaker's status at all times.

Key Technical Data:

• Nominal current: 50 A
• Operating voltage: 230/400 VAC
• Network type: TT, TN-S
• Nominal discharge current: 15 kA
• Maximum discharge current: 40 kA
• Differential mode protection level: < 1.5 kV (between phase and neutral)
• Common mode protection level: < 1.5 kV (between neutral and earth)
• Dimensions: 161 mm wide, 76 mm high and 102 mm deep
• Weight: 0.98 kg
• Protection grade: IP20 (IP40 in modular cabinets)
• Mechanical durability: 20,000 cycles
• Electrical durability: 10,000 cycles

Additional Benefits:

• This Acti9 Combi SPU circuit breaker is ideal for protecting installations in both homes and small businesses, providing complete protection against overloads, short circuits, and atmospheric surges.
• Its capability to manage large transient discharges, along with its compact design and easy DIN rail installation, makes it a reliable and practical choice for electricians and installers.
• With a response time of less than 25 nanoseconds, it guarantees an immediate reaction to any overload, minimising risks and damage to connected equipment.

The Acti9 Combi SPU not only offers complete protection but is also designed to ensure service continuity, meaning it can continue operating under adverse conditions without interrupting the power supply to connected devices. Its robust design and quality certifications (CE, AENOR) ensure it meets the highest safety and performance standards in the electrical industry.