2 Module Isolator (MDPI) Unit

Moulded from flame retardant self extinguishing ABS

MDPI/F1L Isolator Unit

Dimensions: Height: 156mm, Width: 77mm Depth: 91mm

F144SP  Single Pole, Single Fuse Protection, provides loop in / out facility.

Features & Benefits

Designed to accept BS88 LD & MD fuse links up to 32A (29x12.7mm). Miniature Circuit Breakers can be fitted instead of fuses. Fitted with live, neutral and earth terminals as standard. Other configurations are also available, please call for details.



IP3  One way Internal Brass Plate, available with 1 x 20 mm hole, suitable for MDPI Unit.

ABS Plate  Fitted as standard with graduated cone grommet. Brass Ferrule or Cable Gland can be supplied / fitted to the above plate. External Brass Plates are also available, please call for details.

3 Module Isolator (DPI) Unit

Moulded from flame retardant self extinguishing ABS

DPI/F2L Isolator Unit

Dimensions: Height: 160mm, Width: 78mm Depth: 80mm

DPI/F1L  32a DP Switch + 1 x BS88 Fuse Carrier Pre-Wired for 1 Upward Lantern Circuit.

DPI/F2L  32a DP Switch + 2 x BS88 Fuse Carrier Pre-Wired for 2 Upward Lantern Circuit.

DPI/F1L/1S  32a DP Switch + 2 x BS88 Fuse Carrier Pre-Wired for 1 Upward Lantern & 1 Downward Spur Circuit.

Features & Benefits

Designed to accept BS88 LD & MD fuse links up to 32A (29x12.7mm). Miniature Circuit Breakers, RCD, RCBO and Time Clocks can be fitted instead of fuses. Fitted with live, neutral and earth terminals as standard. Other configurations are also available, please call for details.


DPI/F1L/1S Isolator Unit + B31 Extension + IP8 Plate
(Internal view)

Extension Boxes For DPI

B1  Two way extension box - Height 49 x Width 90 x Depth 67 mm, 87mm from Fused Unit terminal block to cable entry plate.

B21  Two way extension box - Height 49 x Width 90 x Depth 67 mm, 87mm from Fused Unit terminal block to cable entry plate.

B31  Three way extension box, accepts up to 5 terminal blocks for up to 25mm2 circular conductors, 70mm from Fuse Unit terminal block to cable entry plate. Height 123 x Width 88 x Depth 95 mm

IP4 Brass Plate IP7 Brass Plate IP8 Brass Plate

Cable Entry Plate Options

IP4  Two Way Internal Brass Plate, available with 2x20mm holes, suitable for F144 unit.

IP7  Two Way Internal Brass Plate, available with 2x20mm or 2x25mm holes, suitable for B1 and B21 extension box.

IP8  Three Way Internal Brass Plate, available with 3x20mm or 3x25mm holes, suitable for B30 and B31 extension box.

4 Module Isolator (FMI) Unit

Moulded from flame retardant self extinguishing ABS

FMI/F3 Isolator Unit

Dimensions: Height: 172mm, Width: 90mm Depth: 91mm

FMI/F1L  32a DP Switch + 1 x BS88 Fuse Carrier Pre-Wired for 1 Upward Lantern Circuit.

FMI/F2L  32a DP Switch + 2 x BS88 Fuse Carrier Pre-Wired for 2 Upward Lantern Circuit.

FMI/F3L  32a DP Switch + 3 x BS88 Fuse Carrier Pre-Wired for 3 Upward Lantern Circuit.

FMI/F1L/1S  32a DP Switch + 2 x BS88 Fuse Carrier Pre-Wired for 1 Upward Lantern & 1 Downward Spur Circuit.

FMI/F2L/2S  32a DP Switch + 3 x BS88 Fuse Carrier Pre-Wired for 1 Upward Lantern & 2 Downward Spur Circuit.

FMI/F3L/3S  32a DP Switch + 3 x BS88 Fuse Carrier Pre-Wired for 2 Upward Lantern & 1 Downward Spur Circuit.

Features & Benefits

Designed to accept BS88 LD & MD fuse links up to 32A (29x12.7mm). Miniature Circuit Breakers, RCD, RCBO and Time Clocks can be fitted instead of fuses. Fitted with live, neutral and earth terminals as standard. Other configurations are also available, please call for details.


FMI/F2L/1S Isolator Unit + B3 Extension + IP8 Plate
(Internal view)


Double Pole Triple Fuse Isolator Unit for Two Upward Fused Lantern and one Fused Spur Circuit with Extension Box and Brass Plate, 3 x Ferrules

Extension Boxes For FMI

B2  Two way extension box, accepts up to 5 terminal blocks for up to 25mm2 circular conductors, 65mm from terminal block to cable entry plate.
Height 105 x Width 90 x Depth 67 mm.

B3  Three way extension box, accepts up to 5 terminal blocks for up to 25mm2 circular conductors, 65mm from terminal block to cable entry plate.
Height 105 x Width 90 x Depth 93 mm.



Cable Entry Plate Options

IP7  Two Way Internal Brass Plate, available with 2x20mm or 2x25mm holes, suitable for B1 and B21 extension box.

IP8  Three Way Internal Brass Plate, available with 3x20mm or 3x25mm holes, suitable for B30 and B31 extension box.


ABS Plate fitted as standard with graduated cone grommets. Brass Ferrules with cable clamps or Cable Glands can be supplied / fitted to any of the above plates. External Brass Plates are also available, please call for details.