Reliable power for a sustainable world

  Riello Connect   


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Power Range: 20 - 100 kVA


  • Fully compliant with strict EN 50171 standards 
  • Ideal for emergency and safety-related applications 
  • Designed to support continuous overloads up to 120% 
  • Long battery autonomy and rapid recharge times (less than 12 hours) 
  • Optional galvanic isolation of the input and output 


Central Power Supply Systems (CPSS) are specific solutions designed to protect emergency, security and safety applications such as emergency lighting, smoke detectors, fire alarms, and sprinklers. Complies fully with EN 50171. 

Delivers several hours of battery autonomy with short recharge times (up to 80% of capacity within 12 hours). Dual input as standard with optional galvanic isolation. Casing meets exacting standards of EN 60598-1. 

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Riello UPS’s CSS Multi Sentry (Central Supply Systems) are designed in full compliance with standard EN 50171. They are proven performers across a range of emergency and safety-related applications.

According to local regulations our reliable solutions are suitable for emergency lighting, fire safety and prevention (i.e. smoke extractors and fire extinguishers), lifts, safety alarms, warning systems (i.e. carbon monoxide detectors), and safety signs.


Dual Input As Standard

Our CSS Multi Sentry all incorporate dual input as standard, which enables you to carry out all the mandatory system easily and safely checks without the risk of the CSS going offline.

During inspections, the bypass line continues to support the load, so you’re protected even in the event of a failure with the main input supply.


Enhanced Battery Care

All Riello UPS CSS Multi Sentry provide long battery autonomy of up to 3 hours (longer if necessary) with quick recharge times guaranteed (up to 80% of full autonomy within 12 hours).

Sophisticated monitoring and battery care systems also maximise lifespan, deploying techniques such as deep discharge protection to reduce battery degradation.


Protection Against Battery Inversion

This ensures the safety of your staff or any service engineers carrying out maintenance on your CSS. It also prevents system damage if they have been mistakenly connected with the wrong polarity.


High Overload Capacity

CSS Multi Sentry are designed to support continuous overloads up to 120% of the system’s nominal power rating. This protection isn’t time limited. 

Brochures and data sheets

Central Supply Systems

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