ABB Contactor Series Operating Instructions

ABB Contactor Series Operating Instructions

Product model and category

Model range: covering (T) BC9, (T) BC16, (T) BC18, (T) BC25, (T) BC26, (T) BC30, (T) KC22E, (T) KC31E, (T) KC40E, (T) KC44E, (T) KC62E, KBC30G, KTBC30G, etc.

Category: Belonging to contactors or contactor relays, used for on-off control of industrial circuits.

Technical parameters and performance

Electrical parameters

Voltage range: Control voltage U c to cover 6VDC~250VDC (some models support wide voltage).

Current and breaking capacity:

At 480VAC, the breaking capacity can reach up to 18kA (such as BC9, BC16, etc.);

At 600VAC, the breaking capacity can reach up to 5kA (such as BC25, BC30, etc.).

Protection type: Supports MCP (motor control protection), MCCB (molded case circuit breaker), K5/RK5 fuses, Type J fuses, etc.

Physical specifications

Size:

(T) BC9/(T) BC16: Width B=44mm, Height H=81mm;

(T) BC30: Width B=54mm, height H=90mm.

Installation method: DIN Rail, supports installation in multiple positions (Pos.1-6), and some models require attention to angle limitations (such as ± 30 °).

Terminal specifications: small models (such as BC9): using M3.5 screws, wire cross-sectional area 0.75-2.5mm;

Large models (such as BC30): using M5 screws, with a wire cross-sectional area of 2.5-10mm

Installation and operation points

Installation specifications

Environmental temperature: The allowable working temperature is -20 ° C~+55 ° C (some models need to refer to specific specifications).

Protection level: IP20 (prevents solid foreign objects, no waterproofing).

Wiring requirements:

The control coil should be wired according to the marked voltage (such as U c, which should be consistent with the coil nameplate to avoid burning);

The main circuit wire needs to be matched with the current load to ensure firm contact (torque reference: M3.5 screw is 1N · m, M4 screw is 1.7N · m).

Precautions for operation

Prohibited live operation: Installation and maintenance require disconnecting the power supply to avoid the risk of electric shock.

Polarity and voltage matching: DC coils need to pay attention to positive and negative poles, and AC coils need to confirm frequency (50/60Hz).

Redundancy protection: It is recommended to use fuses or circuit breakers to prevent overload or short circuit.

Security Warning

Professional personnel operation: Installation, commissioning, and maintenance must be carried out by qualified electricians, following local safety regulations.

Voltage verification: Before powering on, check that the control voltage is consistent with the nominal value of the coil, otherwise it may burn out the coil.

Anti electric shock: Avoid contact with live parts during operation and ensure good grounding of the equipment.

Model differences and application scenarios

(T) BC series: universal contactor, suitable for industrial scenarios such as motor start stop and pump control.

(T) KC series: possibly a contactor with auxiliary contacts, used in complex systems that require signal feedback (such as automated production lines).

KBC30G/KTBC30G: It may be customized for specific industries (such as wind power, heavy machinery), and needs to be confirmed with specific manuals.