





MK Sentry H5660s 2 Module Double Pole Type A RCD 63A 30mA
H5660s
MK Sentry H5660S Double Pole RCD – Type A, 63A, 30mA, 2 Module for MK Sentry Consumer Units
The MK Sentry H5660S is a 2 Module Type A RCD rated at 63A with a 30mA trip sensitivity, designed to provide robust protection against both a.c. and pulsating d.c. earth fault currents. Suitable for use in MK Sentry consumer units and enclosures, it features a double pole design and complies with 17th Edition IET Wiring Regulations.
- Type A Sensitivity: Detects a.c. and pulsating d.c. earth leakage currents, suitable for protecting modern appliances and electronic devices.
- Double Pole Switching: Disconnects both live and neutral conductors for enhanced circuit isolation and safety.
- Positive Contact Status: Clear status indication in line with IET Wiring Regulations (537.2.2.2 and 537.3.2.2).
- High Breaking Capacity: Rated for 10kA fault current interruption in industrial-grade applications.
- Consumer Unit Compatible: Fits MK Sentry consumer units and 2- or 4-module enclosures for flexible installation options.
Technical Specification
- Type: Type A RCD
- Current Rating: 63A
- Tripping Current: 30mA
- Poles: Double Pole
- Modules: 2
- Voltage: 230V
- Breaking Capacity: 10kA
- Cable Capacity: Up to 50mm²
- Dimensions: 83 x 36 x 75mm
✅ Install the MK Sentry H5660S RCD for safe, regulation-compliant protection against earth faults in residential or commercial systems!

Range | Circpro MK Sentry |
Trip Type | Type A |
Sensitivity | 30 mA |
Rcd Type/class | A |
Product | RCD |
Voltage | 230 V |
Pole Configuration | Double Pole (2P) |
Mounting | DIN Rail |
Width | 36 mm |
Current Rating | 63A |
Standards | BS 61008 |
Rcd Sensitivity | 30 mA |
Number Of Poles | Double Pole (2P) |
Number Of Modules | 2 |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 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.