Control And Protection Switchgear

The CPS series control and protection switching device integrates the main functions of a circuit breaker, contactor, overload relay, starter, isolator, signal alarm unit, and protection relay into one modular product. It is used to connect, carry, and break current under normal operating conditions, including electric motor startup, and to protect circuits under abnormal conditions such as short circuit, undervoltage, overvoltage, phase loss, and imbalance.

This product is suitable for motor control centers, power distribution centers, industrial facilities, buildings, fire protection systems, pump and fan systems, remote control systems, and other applications requiring reliable control and protection in a compact device.

• Integrated control and protection functions reduce the need for separate breaker, contactor, overload relay, starter, isolator, and alarm components.
• Supports AC50Hz and AC60Hz systems with rated working voltage up to 690V.
• Main body rated current covers 6.3A to 125A; intelligent controller working current is adjustable from 0.4A to 125A.
• Suitable for motor power from 0.05kW to 50kW according to application selection.
• Provides inverse-time overload long-delay, short-circuit short-delay, instantaneous short-circuit, and fast instantaneous short-circuit protection.
• Includes overvoltage, undervoltage, phase loss, phase imbalance, undercurrent, locked rotor, leakage, and fault alarm functions according to configuration.
• Supports remote, local, and panel operation with digital monitoring of voltage, current, and fault status.
• Modular accessory options include auxiliary contacts, signal alarm contacts, communication, leakage protection, and fire protection functions.

• The panel supports Reset, Open, Free Trip, and Close position indication for clear operating status.
• The LED display can show voltage and can also function as an ammeter by cycling through phase A, phase B, and phase C current values.
• Fault query allows checking previous fault types when the product is running under no load.
• The setting key, shift key, data key, and reset key support parameter adjustment and normal monitoring return.
• When the handle points to TRIP, the line fault must be cleared before reset and re-closing.
• Manual control, local control, and remote control wiring schemes are supported according to cabinet requirements.

This product is recommended for systems that require compact integration of motor control, circuit protection, status monitoring, and reliable switching.

• Electric motor control centers and power distribution centers
• Metallurgy, mining, steel, petrochemical, port, ship, and railway systems
• Power stations and substations
• Highway lighting and ventilation systems
• Fire protection fans, pumps, and building power systems
• Hospitals, commercial buildings, telecommunications rooms, and information processing centers
• Single-motor control and protection systems in factories or workshops
• Remote control systems requiring fault display and alarm signaling

• Ambient air temperature should not exceed +40°C and should not be lower than -5°C; daily average should not exceed +35°C.
• Installation altitude should not exceed 2000m.
• Relative humidity should not exceed 50% at +40°C; at lower temperature, higher humidity may be allowed, such as 90% monthly average at +25°C.
• Measures should be taken to prevent condensation caused by temperature change.
• Pollution degree: 3.
• Installation category: III.

• Before installation, check that the operating handle moves normally and is in the open position.
• Verify that the coil and accessory power voltage matches the manual and the actual control circuit before use.
• When the coil is energized within 85% to 115% Us, the electromagnet should attract reliably in AUTO and release reliably in OFF.
• The action current setting is factory-set to maximum and can be adjusted according to the panel diagram when required.
• External wires at inlet and outlet terminals should be wrapped with insulation.
• Do not disassemble or adjust the product except for operating the rotating handle and setting parameters as required.

• Confirm product name and model.
• Specify main unit frame rated current, short-circuit type, intelligent release type, and rated current.
• Confirm coil control power supply voltage.
• Specify auxiliary contact type and quantity.
• Confirm optional functions such as fire protection, leakage protection, communication, or signal alarm.
• Provide order quantity and application details.

Send us your rated voltage, rated current, motor power, protection function requirements, control voltage, auxiliary contact needs, and quantity. Our team can help select a suitable CPS configuration for reliable motor control and power distribution protection.