BSBC7-50 Specification

BSBC7-50 Specification

BSBC7-50 Specification

Product catalog summary
Product Overview
The BSBC7-50 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 ROHS environmental standards. It is approved by UL, CE, and TUV.

Specifications
  • Rated Current: 50A
  • Rated Voltage: 12-1000VDC
  • Contact Type: SPST NO DM
  • Nominal Resistance: 2 mΩ at 50A
  • Max Switching Current: 500A at 320VDC
  • Coil Voltage Options: 12VDC, 24VDC, 12/24VDC
  • Operating Temperature: -40℃ to +85℃
  • IP Grade: IP67
  • Mechanical Life: 300,000 cycles

Ordering Information
The part number structure includes customer number, mounting type, control supply voltage, auxiliary contact type, contact material, and rated current.

Electrical Characteristics
The contactor has a dielectric withstand voltage of AC3000V and insulation resistance of ≥1000MΩ at 1000VDC. It is designed for a nominal insulation voltage of 1000V.

Environmental Characteristics
The contactor is resistant to shock and vibration, with a stability test of 196m/s² and a strength test of 490m/s². It operates effectively at altitudes up to 4000m.

Installation and Usage Notes
  • Use spring washers to prevent loose screws.
  • Ensure proper torque when tightening screws to avoid damage.
  • Products with an economizer include a built-in reverse surge absorption circuit.
  • Avoid installation near strong magnetic fields or heat sources.
  • Design circuits to ensure power can be cut off within one second to prevent contactor failure.

Additional Considerations
For resistive loads, the rated main contact rating applies. For inductive loads, an inrush current protection device should be used. Ensure the drive circuit power exceeds the product coil power to maintain cutting ability.
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Catalog excerpts

BSBC7-50 Specification-2

BSBC7-50 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, etc....

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BSBC7-50 Specification-3

Environmental characteristics Electrical characteristics

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BSBC7-50 Specification-4

Short overload capacity curve Cut-off life curve of resistive load Life (cycles) Note: Except for special note, the ambient temperature of electrical durability test is 23℃, and the on-break ratio is: 1s: 9s

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BSBC7-50 Specification-5

Horizontal mounting structure: schematic: no polarity requirement for each contact

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BSBC7-50 Specification-6

outgoing line(white) coil outgoing line black norm l)r open auxiliary noiaaUv closed auillim mounting bole normally optn/normlly dosed common port schematic: no polarity requirement for each contact Note: Control coil wire length 300±20mmProduct without tolerance, when ^10mm, tolerance ±0.3mm When dimension between 10~50 mm, tolerance ±0.5mm When dimension^50mm, tolerance ±0.8mm 2025 V1.0

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BSBC7-50 Specification-7

BSBC7-50 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 an...

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BSBC7-50 Specification-8

BSBC7-50 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...

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