- MK Circuit protection, MK Sentry stacking kits
- MK Sentry, K6062s, suitable for use with 21 module units
- Dual rail units can be created using 12, 16 and 21 module units and the appropriate stacking kit.
- MK K6063s - Enables two consumer units to be stacked (joined together) to form one integral consumer unit. Includes frame nuts, bolts and earth cable (for bonding earth terminal bars together).
Note: Dual rail units can be created using 12, 16 and 21 module units and the appropriate stacking kit above.