Proteus Mcb Torque Settings [updated] Jun 2026

If a fire occurs due to a loose Proteus MCB terminal and you cannot produce a torque setting record, your insurance and professional indemnity are void.

(e.g., P1B06, P1C32, P2N63, 4PU32, etc.), I can look up the specific torque for you from archived technical data.

– For a Proteus 6A 10kA MCB (type B, C, D) , a 2019 Electrium datasheet listed 2.0 Nm . For Proteus 63A , 2.5 Nm . proteus mcb torque settings

For further technical details, you can refer to the official Proteus Switchgear product data sheets or contact their technical support at +44 (0)1527 517117 specific torque settings for a different Proteus product, such as their Product Data Sheet - Proteus Switchgear

: Larger industrial-grade MCCBs (e.g., MC016T to MC250T) have a higher torque requirement of Technical Characteristics Summary Torque Setting Cable Capacity Standard MCB 2.0 – 2.5 Nm Up to 25mm² Main Incomer 2.0 – 2.5 Nm Up to 50mm² Main Earth/Neutral (M8) Large bolt connections Side Neutral/Earth Bars Up to 16mm² Industrial MCCB Varied (Large Frame) Installation Best Practices When installing these units in Proteus Metalclad Consumer Units If a fire occurs due to a loose

For standard domestic and light commercial installations, the following tightening torques generally apply to Proteus MCBs and RCBOs: Device Type Terminal Location Recommended Torque (Nm) (6A – 63A) All Terminals 2.0 – 2.5 Nm Compact RCBOs (Single Module) 2.0 – 2.5 Nm Load (Out) 1.0 – 1.5 Nm or 2.2 Nm High Amp MCBs (80A – 125A) All Terminals 3.5 Nm Main Switch / Isolators All Terminals 2.5 Nm Earth & Neutral Bars Terminal Screws 1.5 Nm Installation Best Practices Proteus Data Sheet - Kempston Controls

The specific torque value depends on the product range and current rating. Below is a guide to common Proteus device settings. Proteus MCB Torque Settings Overview For Proteus 63A , 2

. Over-tightening can damage the terminal cage, while under-tightening can lead to high-resistance joints and potential fires.

Proteus terminals typically require of stripped conductor. Too much insulation left inside reduces clamp force; too much bare copper increases the risk of phase-to-earth shorts.