The Schneider Electric BSH0703P11A2A is a TeSys series, 3-pole, thermal-magnetic circuit breaker motor starter protector. It is specifically designed to provide reliable short-circuit and overload protection for three-phase motors and other electrical equipment. This device combines the functions of a circuit breaker and a thermal overload relay into a single, compact unit, simplifying panel design and saving space. It is commonly used as the main disconnecting and protection device in motor starter assemblies (combinations with contactors) for applications like pumps, fans, and conveyors. Its "handle" design allows for manual ON/OFF switching and provides clear visual status indication.
Product Features
•Compact and Integrated Design: Saves space in control panels by integrating protection functions into a single device.
•Thermal-Magnetic Protection:
•Magnetic Trip: Provides instantaneous protection against high-level short-circuit currents.
•Thermal Trip: Provides time-delay protection against lower-level overload currents, mimicking the thermal characteristics of a motor.
•Clear Switching Status: A robust handle indicates ON (I), OFF (O), and TRIPPED positions, enhancing operational safety.
•High Breaking Capacity: Capable of safely interrupting high fault currents, ensuring system safety.
•DIN Rail Mounting: Easy and quick installation on standard DIN rails.
•Compatibility: Designed to be easily combined with Schneider Electric TeSys contactors to form a complete motor starter solution.
•Ambient Temperature Compensation: The thermal trip mechanism is compensated for ambient temperature variations, ensuring stable performance.
Product Material & Primary Uses
•Materials:
•Housing: Heat-resistant, self-extinguushing plastic (e.g., Polyamide 66) offering high mechanical strength and electrical insulation.
•Contacts: Silver-alloy contacts for durable electrical performance and arc resistance.
•Bimetal Strip: The core component of the thermal trip mechanism, made from two bonded metals with different expansion coefficients.
•Terminals: Tin-plated copper or similar material to ensure good conductivity and prevent oxidation.
•Primary Uses:
•Motor Protection: Primary application for protecting three-phase AC motors from overloads and short circuits.
•Circuit Protection: Used as a protective switch for general electrical circuits and equipment.
•Main Disconnect: Serves as a local isolation point for machinery and control panels.
•Industrial Applications: Widely used in control panels for HVAC systems, water treatment plants, manufacturing machinery, and conveyor systems.
Important Parameters
The following table summarizes the key technical specifications for the BSH0703P11A2A.
Adjustable to match the full load current of the motor
Tripping Class
Class 10
Trips within 10 seconds at 7.2 x Iu (standard for motors)
Mounting
DIN Rail (35mm)
Standard TS35 rail
Torque for Main Terminals
2.0 N·m
Electrical Durability
≥ 20,000 cycles
Mechanical endurance is typically higher
Standards
IEC/EN 60947-2, IEC/EN 60947-4-1
Width (in Modular Units)
54 mm(Approx. 3 poles)
Frequently Asked Questions:
1. Q: Do you provide warranty for the goods?
A: Yes, we provide warranty for all the goods from us.We offer one year warranty for New items,6 months warranty for Used items.
2. Q: Could you provide technology support?
A: We're in this field many year. If there's any problem, please contact with us,we'll provide suggestion from our engineer to help you solve problem.
3. Q: Do you keep goods in stock or only trading?
A: We have large warehouse for goods and keeping lots of goods in warehouse, so we could delivery the items in short lead time.