Purchase now: Bonfiglioli BN 63A 4 AC Electric Motor
Purchase now: Atlantechdrives provides you the BN 63A 4 230/400-50 IP55, a rugged, high-performance three-phase asynchronous AC induction motor manufactured by the global power transmission experts at Bonfiglioli. Designed to comply strictly with IEC international standards, the BN 63A is a universal drop-in replacement motor built for extreme reliability in demanding industrial environments. Featuring a 4-pole stator winding design, this motor delivers a synchronous speed of 1500 RPM (at 50Hz), providing the perfect balance of rotational speed and starting torque for driving gearboxes, centrifugal pumps, industrial fans, and conveyor belts. Protected by a highly durable aluminum housing with an IP55 rating, it effortlessly repels factory dust, metal shavings, and low-pressure water jets, making it suitable for both indoor manufacturing plants and harsh outdoor installations.
Technical Specifications of the BN 63A 4 Motor
This motor utilizes premium-grade copper windings and high-quality Class F insulation, ensuring it can withstand significant internal heat generation without breaking down. The dynamically balanced rotor ensures whisper-quiet, vibration-free operation.
- Part Number: BN 63A 4 230/400-50 IP55
- Motor Type: 3-Phase AC Induction Motor
- Frame Size: IEC 63A
- Number of Poles: 4-Pole (Approx. 1350 – 1400 RPM under load)
- Voltage: 230V Delta (Δ) / 400V Star (Y)
- Frequency: 50 Hz
- Protection Rating: IP55 (Dust and water jet protected)
- Cooling Method: IC411 (Totally Enclosed Fan Cooled – TEFC)
Expert Installation Advice: Star-Delta Wiring and VFDs
Incorrect wiring is the leading cause of instant motor failure. Expert Tip: The terminal box of the BN 63A 4 specifies «230/400V». This means the copper coils inside the motor are designed to handle exactly 230 Volts across them. If your factory provides a standard 400V 3-phase power supply, you must wire the motor terminal block in the «Star» (Y) configuration using the provided brass bridging links. This distributes the 400V safely across two coils. If you mistakenly wire the motor in the «Delta» (Δ) configuration while feeding it 400V, the coils will receive nearly double their rated voltage, and the motor will burst into flames within seconds. Furthermore, this motor features high-grade insulation, making it perfectly compatible for use with Variable Frequency Drives (VFDs) for precise speed control.
Maintenance and Bearing Lifespan
The BN 63A frame size utilizes permanently lubricated, double-shielded deep groove ball bearings (sealed for life). Under normal operating conditions and ambient temperatures, these bearings do not require manual greasing and are designed to last for tens of thousands of hours. However, maintenance technicians must ensure that the rear plastic cooling fan cowl is never blocked. If a motor is installed pushed tight against a wall or covered in thick debris, the fan cannot pull ambient air across the cooling fins. The motor will overheat, the bearing grease will liquefy and leak out, and the motor will ultimately seize.
Frequently Asked Questions (FAQs)
Q: Can I run this 50Hz motor on a 60Hz power grid?
A: Yes. A 50Hz motor can generally be operated on a 60Hz grid. However, its synchronous speed will increase by 20% (from 1500 RPM to 1800 RPM), and it will draw slightly different amperage. You must adjust your driven machine’s ratios to compensate for the higher speed.
Q: How do I reverse the rotation of this motor?
A: To reverse the direction of a 3-phase induction motor, simply swap any two of the three incoming power phases (e.g., swap L1 and L2) at the motor terminal block or the magnetic contactor.
Do you need more references from this brand? Explore our full catalog of Bonfiglioli here.
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