
MK Sentry H6537M Compact RCBO 40A DP C Curve 30MA Type A 6KA
H6537M
MK Sentry Compact 40A DP C Curve Type A RCBO – Space-Saving Circuit Protection with Advanced Safety Features
The MK Sentry Compact RCBO combines overcurrent and earth fault protection in a single-module design, offering a space-saving solution for residential and commercial electrical installations. With neutral switching double pole functionality, it ensures full disconnection for enhanced safety while protecting circuits with high inrush currents.
- Compact Single-Module Design – Saves space in consumer units while providing dual protection.
- C Curve Tripping Characteristic – Ideal for circuits with high inrush currents, such as motors and transformers.
- 40A Rated Current – Provides reliable protection for low-power circuits.
- 6kA Breaking Capacity – Ensures compliance with safety standards for fault protection.
- 30mA RCD Sensitivity – Detects and isolates earth leakage faults, reducing electric shock risk.
- Double Pole (DP) Neutral Switching – Ensures complete isolation of live and neutral conductors for enhanced safety.
- Type A RCD Protection – Detects AC and pulsating DC residual currents for improved fault detection.
- Easy Installation – DIN rail mounting for seamless integration into electrical installations.
Technical Specification
- Rated Current: 40A
- Breaking Capacity: 6kA
- Tripping Curve: C Curve
- RCD Sensitivity: 30mA
- Type: A
- Number of Poles: Double Pole (DP)
- Mounting: DIN Rail
- Compliance: BS EN 61009
✅ Upgrade your installation with the MK Sentry Compact 40A DP C Curve Type A RCBO for reliable, space-saving circuit protection!

Trip Type | C Curve Type A |
Product | RCBO |
Type | Singe Pole Compact |
Current Rating | 40A |
Number Of Poles | Double Pole (2P) |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- STANDARD DELIVERY – 2–3 Working Days From Despatch (subject to stock availability) - £4.99 inc-VAT. (£4.16 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.