
MK Sentry H4516S AFDD/RCBO 16A DP C Curve 30MA Type A
H4516S
MK Sentry 16A DP C Curve Type A AFDD/RCBO – Advanced Fire & Fault Protection for High Inrush Circuits
The MK Sentry AFDD/RCBO offers superior electrical protection by combining arc fault detection, overcurrent, and earth leakage protection. Designed for circuits with high inrush currents, this device ensures enhanced safety in residential, commercial, and industrial applications by detecting dangerous arcing conditions that may go unnoticed by MCBs and RCDs.
- Arc Fault Detection Technology – Identifies and isolates hazardous arcing faults, reducing the risk of electrical fires.
- C Curve Tripping Characteristic – Suitable for circuits with high inrush currents, such as motors and transformers.
- 16A Rated Current – Ideal for low-power circuits while ensuring comprehensive protection.
- 30mA RCD Sensitivity – Provides additional safety against electric shock and earth leakage faults.
- Double Pole (DP) Switching – Ensures full disconnection of both live and neutral conductors for maximum protection.
- Type A RCD Protection – Detects AC and pulsating DC residual currents for enhanced fault detection.
- Compact & Modular Design – Space-saving unit for easy DIN rail installation in consumer units.
Technical Specification
- Rated Current: 16A
- 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, BS EN 62606
✅ Upgrade your electrical safety with the MK Sentry 16A DP C Curve Type A AFDD/RCBO for advanced fire and fault protection!

Trip Type | C Curve Type A |
Product | RCBO |
Type | Single Pole + AFDD |
Current Rating | 16A |
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.