Philips BSN 70K302 Conventional Magnetic Ballast for 70W HID Lamps, 230V 50Hz 74082800

The Philips BSN 70K302 is a conventional magnetic ballast engineered for 70-watt high-intensity discharge lamps. Unlike electronic ballasts that integrate control circuitry, this unit uses a simple, robust coil-core design that delivers dependable lamp operation in fixed installations. Its polyester resin housing provides electrical insulation and mechanical stability, making it a practical choice for industrial and outdoor luminaires where reliability under continuous operation is essential.

Highlights

• Conventional magnetic ballast for 70 W HID lamps
• 230 V, 50 Hz supply compatibility
• Polyester resin housing for durability
• Requires external ignitor and capacitor (not included)
• Maximum case temperature up to 130 °C
• Ambient temperature range from -20 °C to +50 °C

In daily use

The ballast operates with an external ignitor, such as the Philips SN 57, to start the lamp and an external capacitor for power factor correction. With a 10 µF capacitor, the power factor exceeds 0.85 and current draw is 0.45 A. Without a capacitor, the power factor drops to approximately 0.45, increasing line current and reducing efficiency. Power losses are 8.0 W under nominal conditions. Screw terminals provide secure electrical connections.

Full specifications

• Ballast type: Conventional (magnetic)
• Lamp type: High-intensity discharge (HID)
• Lamp wattage: 70 W
• Supply voltage: 230 V
• Supply frequency: 50 Hz
• Ignitor: External required
• Capacitor: External required for power factor correction
• Housing material: Polyester resin
• IP rating: IP20
• Maximum case temperature: 130 °C
• Ambient temperature range: -20 to +50 °C
• Power factor with capacitor: >0.85
• Power factor without capacitor: ~0.45
• Power losses: 8.0 W
• Current with capacitor: 0.45 A
• Terminal type: Screw terminals

Final note

The BSN 70K302 is a straightforward, serviceable ballast for HID lighting systems. Its conventional design suits applications where simplicity and proven performance are valued over advanced control features.