WAGO series molded case circuit breaker (MCCB)

WAGO series molded case circuit breaker (MCCB)

Product Scope and Manual Positioning

1. Product details for adaptation

Clearly cover the specific series of WAGO molded case circuit breakers, list the core compatible models (including sub models with different rated currents and breaking capacity levels), and label the product application scenario boundaries (such as industrial distribution, building power supply, and other low-voltage distribution systems).

Core function of the product: As a key protective component of low-voltage distribution networks, it can detect and disconnect faults such as overload, short circuit, and grounding faults, and protect the safety of circuits and electrical equipment.

2. Core purpose of the manual

Target audience: Electrical installation personnel, maintenance technicians, equipment management personnel (with corresponding electrical qualifications).

Core value: Provide standardized and compliant operating basis, avoid equipment damage, electric shock, fire and other safety risks caused by installation errors, improper operation, and maintenance deficiencies, while ensuring stable product performance.

Important statement: The manual specifies the minimum requirements for safe use of the product, which must be implemented in conjunction with the on-site distribution system specifications and local electrical regulations; After the manual is revised, the latest version shall prevail, and the content of the old version shall automatically become invalid.

Safety Warning and Basic Requirements

1. Core security warning

Electrical safety: All operations must be carried out after power failure, and it is necessary to confirm that there is no residual voltage in the circuit (using professional electrical inspection tools). Live installation, wiring, or disassembly are prohibited.

Protection requirements: Insulated gloves, goggles and other protective equipment should be worn during operation to avoid injuries caused by electric arc burns and metal debris splashes.

Prohibited scenarios: It is strictly prohibited to modify the core components of circuit breakers (such as release devices and arc extinguishing chambers); It is strictly prohibited to use beyond the rated parameters (current, voltage, breaking capacity); It is strictly prohibited to operate in non-standard environments such as humidity, corrosion, and excessive dust.

Responsibility statement: The manufacturer shall not be held responsible for any equipment malfunctions or safety accidents caused by failure to comply with the manual requirements.

2. Basic usage prerequisites

Personnel qualifications: Operators and maintenance personnel must have low-voltage electrical operation qualifications, be familiar with the principles of power distribution systems and the working mechanism of circuit breakers.

Environmental requirements: Clearly define the environmental conditions for product operation, with a temperature range typically between -5 ° C and 40 ° C, humidity ≤ 95% (no condensation), and altitude ≤ 2000m (reduced capacity is required for use beyond altitude); Keep away from flammable, explosive, strong magnetic fields, and strong vibration sources.

Equipment inspection: Before installation, it is necessary to confirm that the appearance of the circuit breaker is not damaged, the accessories are complete (such as release, operating handle, wiring terminal), and the product nameplate parameters are consistent with the actual usage requirements.

Installation specifications and operating procedures

1. Preparation before installation

Tool preparation: Professional tools such as torque wrenches, crimping pliers, and insulation stripping pliers are required, and the insulation performance of the tools must meet safety standards.

On site inspection: Confirm that the installation plate at the installation location has sufficient strength (able to withstand the weight of the circuit breaker and the electric force during short circuit), and that the installation surface is flat and free of debris; The specifications of the distribution line should match the rated current of the circuit breaker (the wire cross-section and material should meet the requirements).

2. Specific installation process

Fixed method: The circuit breaker is fixed to the mounting plate with bolts, and the bolt torque must comply with the manual regulations (different models correspond to different torque values) to avoid loosening and vibration during operation.

Wiring requirements:

The direction of incoming and outgoing wires should follow the manual markings (reverse wiring is not allowed), and the length of wire stripping should match the depth of the terminal to avoid short circuits caused by exposed conductors being too long.

When tightening the wiring terminals, it is necessary to operate according to the specified torque to prevent excessive looseness from causing excessive contact resistance and heating, or excessive tightening from damaging the terminals.

Multi core wires require the use of crimping terminals, and it is prohibited to directly insert multi stranded wires into the terminal holes.