WKC 3 Pole 10kA MCB – 16A D Curve (WKC316D)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC316D 3 Pole 10kA MCB is a 16A D Curve breaker designed for heavy-duty three-phase circuits subject to high inrush currents. With a 10kA breaking capacity and compliance with BS 7671 (18th Edition), it offers safe disconnection during overload and short-circuit faults. Ideal for industrial motors, welders, transformers, and...
The WKC316D 3 Pole 10kA MCB is a 16A D Curve breaker designed for heavy-duty three-phase circuits subject to high inrush currents. With a 10kA breaking capacity and compliance with BS 7671 (18th Edition), it offers safe disconnection during overload and short-circuit faults. Ideal for industrial motors, welders, transformers, and plant machinery, this breaker is compact, DIN rail mounted, and bi-directional for installation flexibility.
Installer Tip: Select D Curve breakers where circuits experience high inrush currents. For standard resistive loads, use the B Curve. For moderate inductive circuits, see the C Curve.
Key Features
- 16A rated current – for medium-duty three-phase circuits
- D Curve tripping – trips at 10–20x In
- 10kA breaking capacity – withstands high prospective fault currents
- 3 Pole design: provides full protection across three phases
- Bi-directional: allows wiring from top or bottom
- Applications: welders, transformers, industrial motors, heavy machinery
Compare 16A 3 Pole Variants
| Model | Curve | Rated Current | Breaking Capacity |
|---|---|---|---|
| WKC316B | B Curve | 16A | 10kA |
| WKC316C | C Curve | 16A | 10kA |
| WKC316D (This Product) | D Curve | 16A | 10kA |
Where is the WKC316D typically used?
For protecting 16A three-phase circuits with heavy inrush loads such as motors, welders, or plant machinery.
How does a D Curve differ from B and C?
B Curve trips at 3–5x In (resistive), C Curve at 5–10x In (inductive), and D Curve at 10–20x In (heavy machinery).
What does 10kA breaking capacity mean?
It’s the maximum short-circuit current the breaker can safely interrupt, ensuring reliability in commercial and industrial boards.
Is the WKC316D bi-directional?
Yes — wiring can be connected from either top or bottom.
Is this breaker suitable for EV or PV installs?
Generally no — EV and PV installs use B or C Curve models. D Curve is for industrial inrush-heavy circuits.
- Product Code: WKC316D
- Type: Miniature Circuit Breaker (MCB)
- Poles: 3P (three-phase)
- Rated Current: 16A
- Curve: D Curve
- Breaking Capacity: 10kA
- Mounting: DIN rail, 18mm per module
- Functions: Overload & short-circuit protection, switching, isolation
- Compliance: BS 7671 (18th Edition)
- Endurance: 4000 mechanical / 2000 electrical operations
- Brand: WCED
Install in industrial or commercial boards where circuits have high inrush demands. Curve selection guidance:
- B Curve: lighting, sockets (resistive)
- C Curve: motors, HVAC, EV chargers (moderate inrush)
- D Curve: welders, transformers, heavy plant (high inrush)
Confirm the site’s prospective fault current is within the 10kA rating. Installation must follow BS 7671 and be completed by a qualified electrician.
