Three-Phase 3-Way Switch C16 16 Amp MCB Breaker

Reliable 3-phase protection for industrial and commercial setups. The Tomzn TOB1-63H C16 MCB is a compact 3-pole miniature circuit breaker rated at 16 A with a C-curve tripping profile — ideal for motors, heating circuits, and lighting systems where moderate inrush currents occur. Designed for professional three-phase panels and distribution boards.

Key Features

• 3-pole design: Protects all three phases in a 400 V AC system.
• Rated current: 16 A C-curve (5–10 × In trip range).
• Breaking capacity: 6 kA — complies with IEC/EN 60898-1 and GB/T 10963.1.
• Mounting: Standard 35 mm DIN rail — fits UK distribution boards and enclosures.
• Material: Flame-retardant thermoplastic housing for safety and durability.

Technical Summary

Ideal For

• Industrial machine panels and control boards
• Three-phase heating and HVAC systems
• Commercial lighting and distribution circuits
• Motor and pump protection setups
• Outdoor installations when used with an IP65 three-way enclosure for full weather protection

Installation Tips

Always isolate power before installation. Fit securely on a standard DIN rail and tighten terminals firmly to prevent arcing. For outdoor or portable use, install the breaker inside an IP65-rated mini enclosure and use quality 1.5 mm² or 2.5 mm² Cable Coils for wiring — that’s why we test them.

Shipping & Support

UK-stocked and dispatched same day on orders before 2 PM. Securely packed for transit and backed by friendly UK support from MotorCables.

Frequently Asked Questions

What does C16 mean on the Tomzn TOB1-63H MCB?

“C” is the trip curve for moderate inrush loads like motors. “16” is the current rating in amps under normal load.

Is the Tomzn TOB1-63H 3-pole MCB suitable for three-phase systems?

Yes — it’s a 3-pole breaker that protects all phases of a 400 V AC supply in one unit.

Can the Tomzn C16 MCB be used in residential installations?

It can, but it’s mainly used in commercial or industrial sites with three-phase supply.

What’s the difference between B, C and D curve MCBs?

B trips at 3–5× current, C at 5–10× and D at 10–20×. C-curve is best for motors and lighting with moderate inrush.

Will the Tomzn TOB1-63H fit my consumer unit or enclosure?

Yes — it mounts on a standard 35 mm DIN rail and is three modules wide. For external or weatherproof use, install it in an IP65 three-way breaker box.

Disclaimer: All technical data, ratings, and compatibility information are supplied for guidance only. While every effort is made to ensure accuracy, HDIUK Ltd accepts no liability for minor discrepancies arising from manufacturing or specification changes.