Key Features
Product Overview
The MBFK series intelligent electronic capacitor switching switches are available in common compensation and split compensation types. The common compensation type switches three-phase capacitors in a delta connection, while the split compensation type switches single-phase capacitors in a Y connection.
Using single-chip microcomputer technology, the switch controls each capacitor phase according to the phase sequence of the three-phase power supply, enabling smooth switching without inrush current or overvoltage.
With zero surge, low power consumption, long service life, and low failure rate, the MBFK series can replace AC contactors and capacitive non-contact switches and is widely used in low-voltage reactive power compensation systems.
Technical Parameters
Parameter |
Specification |
Rated Working Voltage |
220 VAC ±20% / 380 V |
Operating Power Supply |
220 V AC |
Rated Frequency |
50 Hz ±0.5 Hz |
Control Voltage |
DC 8–18 V |
Service Life |
≥100,000 switching operations |
Switching Capacity |
Three-phase: ≤30 kVAr (Delta connection); Single-phase: ≤10 kVAr (Y connection) |
Response Time |
≤1000 ms |
Switching Interval |
≥1 second between each switching operation |
Continuous Switching Interval |
≥30 seconds between two consecutive switching-on operations |
Re-energizing Delay |
30 seconds after the switch is turned off |
Voltage Drop Across Contacts |
≤100 mV |
On-State Resistance |
≤0.003 Ω |
Insulation Resistance |
≥10 MΩ under normal atmospheric conditions |
Dielectric Strength |
≥1600 V |
Power Consumption |
≤1.5 VA |
Voltage Distortion |
≤5% |
Dimensions |
160 × 96 × 90 mm |
Mounting Dimensions |
142 × 80 mm |
Wiring Drawing
Service Conditions
Altitude: not exceeding 2500 m.
Ambient temperature: -25°C ~ +50°C.
Relative humidity: not exceeding 50% at 40°C, and not exceeding 90% at 20°C.
The surrounding environment shall be free of corrosive gases, conductive dust, and flammable & explosive media.
No severe vibration at the installation site.
EN
