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| INTERNATIONAL | XS | S | M | L | XL | XXL | XXXL |
|---|---|---|---|---|---|---|---|
| EUROPE | 32 | 34 | 36 | 38 | 40 | 42 | 44 |
| US | 0 | 2 | 4 | 6 | 8 | 10 | 12 |
| CHEST FIT (INCHES) | 28" | 30" | 32" | 34" | 36" | 38" | 40" |
| CHEST FIT (CM) | 716 | 76 | 81 | 86 | 91.5 | 96.5 | 101.1 |
| WAIST FIR (INCHES) | 21" | 23" | 25" | 27" | 29" | 31" | 33" |
| WAIST FIR (CM) | 53.5 | 58.5 | 63.5 | 68.5 | 74 | 79 | 84 |
| HIPS FIR (INCHES) | 33" | 34" | 36" | 38" | 40" | 42" | 44" |
| HIPS FIR (CM) | 81.5 | 86.5 | 91.5 | 96.5 | 101 | 106.5 | 111.5 |
| SKORT LENGTHS (SM) | 36.5 | 38 | 39.5 | 41 | 42.5 | 44 | 45.5 |
The WMC163C is a 63 A single-pole 6 kA Miniature Circuit Breaker (MCB) designed for large feed and distribution circuits where inrush currents from motors, welders or transformers demand higher tolerance. Its C-curve tripping profile (5–10 × In) provides robust inrush immunity while ensuring rapid disconnection during short-circuits and overloads.
Fully tested to BS EN 60898, the WMC163C fits all Whitecliffe consumer units and standard DIN-rail enclosures. It delivers 6 kA breaking capacity and 20 000 mechanical operations for long-term performance in domestic, commercial and light-industrial environments.
Installer Tip: Use 63 A C-curve breakers for main feed or distribution circuits where motors and transformers are present. Confirm Zs, voltage drop and cable capacity against BS 7671 limits before commissioning.
| Part Code | Rating | Curve | Typical Use |
|---|---|---|---|
| WMC150C | 50 A | C | Feed and plant circuits with high inrush |
| WMC163C | 63 A | C | Main feeds and distribution boards |
The WMC163C delivers 6 kA fault protection for main feeds and distribution circuits. For standard resistive loads, choose a B Curve MCB; for added earth-fault protection, use our Type A RCBOs.