BCH8-25 MODULAR CONTACTOR
Scope of application
BCH8 Modular Contactor (also known as analog contactors and architectural contactors) are mainly used in power systems with AC 50Hz/60Hz, rated working voltage up to 400V and rated working current up to 100A. They are used as remote switches and control circuits in AC-1 and AC-7a (non-inductive or low-inductive loads, resistance furnaces, household appliances and similar low-inductive loads). It can also be used to control the load of household motor. Modular Contactors cant’t be used in break short-circuit currents, so appropriate short-circuit protective appliances (such as small circuit breakers) should be selected when using them. It meets the standard IEC 61095. BCH8 contactor can expand auxiliary control, protection and indication functions. BCH8 Modular Contactor is a kind of control device used for long distance connection and disconnection of inductionless or low inductive load, resistance furnace, household appliances and similar low inductive load, household motor, etc. BCH8 Modular Contactor are mainly used in homes, hotels, apartments, office buildings, public buildings, shopping malls, gymnasiums and other places to achieve automatic control functions.
(1) The analog and digital control device has novel structure and compact volume.
(2) Installation orbiting, dimension modularization, safe use, can be combined with small circuit breakers installed in the control lighting box.
(3)The use of high-quality insulation materials greatly improves the safety.
(4) Beautiful appearance with working status indicator window.
(5)No noise, suitable for hotels, hospitals and other places.
Normal working conditions
Ambient air temperature: The upper limit of ambient air temperature is + 60℃ and the lower limit is – 5℃. When the AC contactor is installed in the distribution box, spacers must be assembled on both sides to facilitate heat dissipation. Elevation: The altitude of the installation site shall not exceed 2000m.
Atmospheric Conditions: When the installation temperature is + 60℃, the relative humidity of the air does not exceed 50%. Higher relative humidity can be allowed at lower temperatures, such as + 20℃ up to 90%. Special measures should be taken for occasional condensation due to temperature changes.
Pollution grade: Grade II.
Installation Category: II.
Installation method: TH35-7.5 type guide rail is used for installation. There is no significant impact and vibration at the installation site. It is installed vertically. The inclination between the installation surface and any direction is not more than 5 degrees.
Main technical parameters
A) Eight-hour working system: This working system is the basic working system. The agreed free air heating current Ith of the Modular Contactor is determined by this working system.
B) Intermittent periodic working system: The operating frequency of the AC contactor is 30 times/h and the load factor is 40%.
Action (operation) condition
In the ambient air temperature range of – 5 +60℃, when the suction coil of the contactor is applied with a quota to control the power supply voltage Us so as to heat it to a stable state, the contactor should be reliably closed at any voltage in the range of (85%~110%) Us, and released and disconnected between 75% and 20% of the rated control power supply voltage Us.
Mechanical life: The mechanical life of modular contactor is not less than 1 million times.
Electrical life: The electrical life of analog contactor is not less than 100,000 times.
Installation, use and maintenance
Before installation, technical data of Modular Contactor (such as rated voltage, current, operating frequency, etc.) should be checked.
When installing, it should be installed according to the stipulated conditions. The terminal A1 of the contactor coil should be facing upward and conform to people’s visual habits.
Contactors with metal mounting boards should be properly grounded.
The screw of the terminal should be tightened. After checking the correct connection, the main contact should be disconnected several times before it can be put into use.
If abnormal noise is found in the use of Modular Contactors, it may be dirt on the pole surface of the iron core, please wipe the pole surface.
In the use of Modular Contactor, all parts of the product should be inspected regularly. The movable parts should not be jammed and the fasteners should not be loosened. If the parts are damaged, they should be replaced in time.
BCH8 Modular Contactor can be used in large-scale lighting circuit control, public hot water control, geothermal power supply control, automatic curtain rolling control, small motor control and other fields.
All right. In large public places such as hotels, hotels, stations, hospitals and office buildings, all kinds of electrical equipment can be effectively controlled, which can be used as the best terminal execution unit of intelligent building system.
Bank, Industry and Commerce, Taxation, Telecom, Hospital, Post, Finance Bureau, Labor Bureau, Personnel Bureau, Social Security Bureau, Government One-stop Service Office, Insurance, Vehicle Administration, Transportation
Windows service industries such as administrative bureau, consulate, entry-exit, customs, inspection and quarantine bureau, disease prevention and control center, Technical Supervision bureau, product customer service center, etc.
Matters needing attention
1. Before installation, check whether the Modular Contactor is in conformity with the scope of use and normal working conditions.
2. The connection mode of BCH8 contactor should be correct.
3. BCH8 Modular Contactor should tighten the connection screw when wiring.