



MK Sentry H5640s 2 Module Double Pole Type A RCD 40A 30mA
H5640s
MK Sentry H5640S Double Pole RCD – Type A, 40A, 30mA, 2 Module, for MK Sentry Consumer Units
The MK Sentry H5640S is a 2 Module Double Pole Type A RCD, designed to detect and disconnect pulsating d.c. and a.c. fault currents with a 30mA trip sensitivity. Rated at 40A, it is suitable for residential and commercial installations requiring dependable earth leakage protection, and complies with the 17th Edition IET Wiring Regulations.
- Type A RCD: Sensitive to both a.c. and pulsating d.c. earth fault currents, ideal for modern electronic loads.
- Double Pole Switching: Simultaneously disconnects both live and neutral conductors, enhancing user safety.
- Positive Contact Indication: Visual confirmation of contact status, in line with 17th Edition IET Wiring Regulations (537.2.2.2 & 537.3.2.2).
- Flexible Installation: Fits MK Sentry consumer units and compatible 2- or 4-module enclosures for adaptable protection solutions.
- Industrial Rated: 10kA breaking capacity, with robust construction for demanding applications.
Technical Specification
- Type: Type A RCD
- Current Rating: 40A
- Tripping Current: 30mA
- Poles: Double Pole
- Modules: 2
- Voltage: 230V
- Breaking Capacity: 10kA
- Cable Capacity: Up to 50mm²
- Dimensions: 83 x 36 x 75mm
✅ Use the MK Sentry H5640S for reliable, regulation-compliant RCD protection across residential and commercial installations!

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 | 40A |
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.