BSBC7-300 Specification

BSBC7-300 Specification

BSBC7-300 Specification

Product catalog summary
Product Overview
The BSBC7-300 Series DC Contactor is designed for safe and reliable operation in various environments, including explosive and harmful conditions. It features a fully sealed design with epoxy resin to prevent oxidation and arc outbursts. The contactor is suitable for applications such as electric vehicles, charging equipment, and photovoltaic systems, and meets UL, CE, and TUV approvals.

Specifications
  • Rated Current: 300A
  • Rated Voltage: 12-1000VDC
  • Contact Material: Alloy
  • Mounting Type: Vertical or Horizontal
  • Polarity Type: Non-polarity for main contact and coil

Electrical Characteristics
  • Dielectric Withstand Voltage: AC3000V
  • Insulation Resistance: ≥1000MΩ@1000VDC
  • Mechanical Life: 300,000 cycles
  • Environmental Resistance: IP67, operating temperature -40℃ to +85℃

Installation and Usage Guidelines
  • Use spring washers to prevent loose screws.
  • Ensure proper torque when tightening screws to avoid damage.
  • Avoid installation near strong magnetic fields or heat sources.
  • For products without an economizer, install a varistor or TVS diode as a surge protector.
  • Do not use products that have been dropped or impacted.

Performance and Life
The contactor is designed for high-voltage DC switching with specified life parameters. It should not be used beyond its rated capacity. The diffusion life of the internal gas is influenced by ambient temperature, which should be maintained between -40℃ and +85℃.

Additional Notes
  • For resistive loads, apply the rated main contact rating. For inductive loads, use an inrush current protection device.
  • Ensure the drive circuit power of the coil is greater than the product coil to maintain cutting ability.
  • Keep the main lead-out end free from debris and grease to prevent overheating.
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Catalog excerpts

BSBC7-300 Specification-1

BSBC7 Series DC Contactor _Specification_ 2025 V1.0

 Open the catalog to page 1
BSBC7-300 Specification-2

BSBC7-300 Specification Feature ●Safe:Fully sealed with epoxy resin, contact and coil will not be oxidized, product performance is not affected by external environment, no arc outbursts, can be worked in explosive and harmful environment. ●Reliable:Adopt DC high voltage non-polarity design, the breaking capacity is higher and more reliable, convenient and reliable installation or wiring. ●Good for environment:All components meet the latest ROHS environmental requirements. ●Application : Ordinary, quick charging, auxiliary contactor. Can be used in EV, charging equipment, photovoltaic system,...

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BSBC7-300 Specification-3

Environmental characteristics Electrical characteristics

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BSBC7-300 Specification-4

BSBC7-300 Specification Short overload capacity curve Outline and wiring schematic diagram Vertical mounting structure coil outgoing auxiliary contact Iine (black) outgoing line (grey) wiring post cumraon port normally open normally closed mounting hole torque schematic: no polarity requirement for each contact

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BSBC7-300 Specification-5

BSBC7-300 Specification Horizontal mounting structure auxiliary contact coil outgoing outgoing line(grey) wiring post torque mounting hole raw.ly cipea imiuun luirallf ct<u» jui.Inn schematic; no polarity requirement for each contact normally closed common port Note: Control coil wire length 300±20mm Product without tolerance, when ^10mm, tolerance ±0.3mm When dimension between 10~50 mm, tolerance ±0.5mm When dimension^50mm, tolerance ±0.8mm

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BSBC7-300 Specification-6

BSBC7-300 Specification Notice 1. Using spring washers to prevent loose screws when installing contactors. 2. The torque range for tightening screws is specified in the accompanying table. Exceeding the maximum torque may cause the product to break. There is no polarity requirement for the main contact and the lead of the control coil of this contactor. 3. The main contacts and control coil leads of this contactor are non-polarized, meaning there are no polarity requirements. 4. Products equipped with an economizer feature a built-in reverse surge absorption circuit, eliminating the need for...

 Open the catalog to page 6
BSBC7-300 Specification-7

BSBC7-300 Specification resistance of the coil will increase, which will increase the product’s closed voltage, may cause excess of rated closed voltage. In this case, the following measures should be taken: Reduce the load current, limit the duration of continuous power or use coil voltage higher than the rated suction voltage. 10.For resistive load, the rated main contact rating shall apply, and for inductive load (L load) with L/R>1 millisecond, an inrush current protection device shall be connected to the inductive load in parallel. 11.The drive circuit power of the product coil must be greater...

 Open the catalog to page 7

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