Fire-rated circuit breaker CX2004-SE-R-3P-400A-B-P-KS2 with tripping device UU PWP and signaling device US PWP

Fire protection circuit breaker – comprehensive protection for installations

This CX2004-SE-R-3P-400A-B-P-KS2 fire protection circuit breaker is an advanced solution designed to effectively protect electrical installations from the effects of short circuits and overloads. Equipped with a UU PWP tripping device and a US PWP signaling device, it constitutes a complete system ensuring a rapid response in the event of a hazard. This is a simple but effective solution, ideal for buildings requiring reliable fire protection.

Construction and operating principle

The circuit breaker is based on a disconnector placed in a dedicated housing with an overcurrent release. Auxiliary contacts are used to signal the status of the tripping and signaling devices, allowing for quick identification of any problems. The circuit breaker is powered via a phase relay, which guarantees its operation even in the event of a momentary voltage drop in one or two phases. The 230VAC release used ensures reliable operation in a hazardous situation. The tripping and signaling devices operate at 230VAC, simplifying integration with existing electrical infrastructure.

Application and benefits

This circuit breaker is used wherever high reliability and a rapid response in the event of a fire are required. This is particularly important in public buildings, industrial halls, warehouses, and residential buildings with increased safety requirements.

• Complete set: The set includes a UU PWP tripping device and a US PWP signaling device, eliminating the need for additional purchases and ensuring full functionality immediately after installation.
• Power supply independence: The phase relay ensures the operation of the circuit breaker even in the event of a voltage drop in one or two phases, increasing system safety.
• Status signaling: Auxiliary contacts allow monitoring of the status of the tripping and signaling devices, facilitating diagnostics and maintenance.
• Resistance to external conditions: The housing with environmental class 2 and protection degree IP54 ensures resistance to harsh weather conditions and the possibility of outdoor installation.
• CNBOP certificate: It has a CNBOP certificate No. 063-UWB-0426 confirming compliance with applicable safety standards.

Physical parameters and mounting

The circuit breaker is characterized by dimensions adapted for easy installation and integration with existing electrical infrastructure: width 400 mm, height 820 mm (plus cable pocket 250 mm and foundation 900 mm) and depth 285 mm. Cables can be connected from below – the maximum cable diameter is 5x240mm². The housing has environmental class 2 and protection degree IP54, which allows it to operate in a wide temperature range (from -25°C to +75°C).