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MK Sentry Contactors & RCBO's

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MK Sentry RCBOs - 7900 series
product photo
MK Sentry RCBOs - 7900 series
An RCBO is a combination of an MCB and RCD
This enables both overcurrent protection and earth fault current protection by a single unit.

Single module Sentry RCBOs may be installed anywhere along the length of the busbar and will occupy one outgoing way.

They are suitable also for installation in Sentry Consumer Units and in Sentry two or four module enclosures.

The current carrying capacity of the cable should always exceed the current rating of the MCB.
Click the order code for AccessoriesTechnical: Full Details and Specification 
Order Code Description Price (ex vat) Qty    
MK 7932S6 Amp 30mA RCBO - MK
EA
21.00
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MK 7933S10 Amp 30mA RCBO - MK
EA
21.00
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MK 7934S16 Amp 30mA RCBO - MK
EA
21.00
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MK 7935S20 Amp 30mA RCBO - MK
EA
21.00
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MK 7936S32 Amp 30mA RCBO - MK
EA
21.00
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MK 7937S40 Amp 30mA RCBO - MK
EA
21.00
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MK 7938S45 Amp 30mA RCBO - MK
EA
21.00
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MK 7939S50 Amp 30mA RCBO - MK
EA
21.00
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Mk Sentry RCBOs
product photo

MK 6936
MK Sentry RCBO's

6900 series has been replaced with 7900 series
6 Amp to 32 Amp - Oct 2009
An RCBO is a combination of an MCB and RCD
This enables both overcurrent protection and earth fault current protection by a single unit.

Single module Sentry RCBOs may be installed anywhere along the length of the busbar and will occupy one outgoing way.

They are suitable also for installation in Sentry Consumer Units and in Sentry two or four module enclosures.

The current carrying capacity of the cable should always exceed the current rating of the MCB.


  • 7900 series replaced the 6900 series - Oct 2009
  • They are interchageable with each other (However the switches do not align exactly with the old MCB' & RCBO's)
Click the order code for AccessoriesTechnical: Full Details and Specification 
Order Code Description Price (ex vat) Qty    
MK 693740 Amp 30mA RCBO - MK ( Clearance Stock )
EA
24.95
All Sold
MK 693845 Amp 30mA RCBO - MK
EA
24.95
Discontinued
MK 693950 Amp 30mA RCBO - MK
EA
24.95
Discontinued
Mk Sentry Contactors
product photo

MK 6220
MK Sentry Contactors
Sentry contactors provide a method of remotely switching higher loads than possible with a time switch or wall switch.
In this regard, they are particularly useful for switching heating, lighting and ventilation circuits. in particular when used in conjunction with off-peak supply tariffs.
Technical: Full Details and Specification 
Order Code Description Price (ex vat) Qty    
MK 622020 Amp 2 Pole Contactor - 1 Module
EA
31.35
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MK 642020 Amp 4 Pole Contactor - 2 Module
EA
30.20
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MK 672020 Amp 2 Pole Contactor Manual Over-Ride
EA
40.00
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