B2 Series Hydraulic Electromagnetic Circuit Breaker
1 The Scope of Application
B2 series product is our company adopts the international advanced technology design and development of hydraulic electromagnetic circuit breaker. The circuit breaker consists of a shell, an operating mechanism, a contact arcing system and a hydraulic solenoid valve tripping device. The e circuit breaker is used for overload and short circuit protection in electrical systems with rated currents from 1A to 50A, AC 50/60hz, rated voltages AC 250V and DC80V and below, as well as for infrequent switching on and off. It is widely used in computer and its peripheral equipment, industrial automation device, telecommunication equipment,communication power system, UPS equipment, railway locomotive, Marine electrical system, elevator control system and mobile power equipment.
2 Basic parameters
Maximum voltage: 277VAC 50/60 Hz, 80VDC. Current Ratings: 1A to 50A. Auxiliary switch: SPDT,5A 250VAC, 1.0A 80VDC. Insulation resistance: at 500VDC, minimally 100 mega Ω. Dielectric strength: UL/CSA product, 1500V between the terminals, 1 minute under AC. Resistance, Impedance: Values from Line to Load Terminal‐based on Series Trip Circuit Breaker
Service life: The mechanic service life under rated current and voltage is 10,000 cycles (6 cycles of operation perminute), and the electric service life is 6,000 cycles.
Free trip: when overloading happens, trip has already been formed in the circuit breaker even if the handle of operating device is forced to be held on the position of ON.
Trip indication: when overloading happens, indicator of operating device handle shows the position of OFF. But, if it is half trip, the handle will be in the centre in the case of overloading.
Operating environment: ‐40℃ to +85℃.
Installation requirements: during the product installation, the 0.8‐1.0NM torque shall be applied on the panel mounting screws (#6‐32 or M3). When connecting the terminals, do apply the torque of 1.4‐1.7NM for #8‐32 or M4 screws and 1.7‐2.3NM for #10‐32 or M5 screws. As for the 2‐pole or 3‐pole circuit breakers with two or more handles, connecting rods, sleeves and spring retaining rings on the handles are in buck. Please put the axis and sleeve on the handle and snap the spring retaining rings on two ends after installing the product. Please install the product horizontally, and order the customized one if vertical installation is required.
Number of poles: 1 pole, 2 poles, 3 poles. Weight: Approximate 65g/pole Complying with: IEC 60934, UL1077, GB17701, UL489A and UL489