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Our Delta Technology Fire Rated Shutter (FRS) is tested up to 4 hours of fire rating integrity. Under normal circumstances FRS can be used as a conventional security shutter. In the case of a fire outbreak, FRS is able to isolate and compartmentalize the fire. 

The curtain is constructed of a series of interlocking single continous roll formed steel slats. The curtains are rolled up onto a barrel forming a drum via a heavy duty fire shutter motorised operator.

The FRS is suitable to be used outdoor (IP rated motor required). The FRS is the most common fire rated shutter in the market. It is commonly used in commerical & residential buildings, industrial factories, logistic hub, ports, loading bay, substations, train/bus depot and mechnical carpark etc.


  • Tested to SS489:2015 & BS EN1634-1

  • Up to 4 Hours of Fire Integrity 

  • Single span up to 14.1m x 7m in dimension

  • Manually operated by hand chain 

  • Automatically operated by control box

  • Upon activation, the alarm will release the brake, thus allowing the shutter to close under gravity

  • A fail safe mechanism that includes a fusible Link that melts at 69°C causing the  shutter to slide down and close under gravity 

  • Intelligent System (IS) has a built-in Brake Re-engagement  Device that stops the shutter once it touches the ground 




Shutter Curtain 

The shutter curtain is formed by interlocking custom designed continuous galvalume mild steel slats of thickness 1mm and a slat pitch of 75mm or 100mm.

Side Guides

The guide rails shall be electrogalvanized formed steel ‘U’ shaped channel with a thickness of 2mm. The overall nominal dimensions of each guide is 70mm (width) x 80mm (depth).

Bottom Bar

The bottom bar shall be constructed of mild steel inverted ‘T’ shaped bar (40mm x 40mm x 4.5mm angle bars). It is the last slat which is situated at the bottom of the entire curtain and it is used to maintain the door rigidity.


Roller Barrel

It shall only consist of a single heavy-duty steel pipe, forming only a single barrel. The drive assembly is made up of steel circular plates fitted to the steel solid shaft round bar on one end and a circular plate with tri-legged slot on the other end.


Shutter Hood

The entire frame shall be constructed with 35mm x 35mm angle bar forming a truss frame. The shutter hood’s dimensions shall be between 365mm to 600mm in height and depth. The driven sprocket shall be attached onto the end plate with a protruding tri-legged holder for the barrel. The frame shall be cladded with a colourbond steel sheet that has a minimum thickness of 0.8mm so as to conceal the shaft assembly.


Shutter Operation 


Each fire shutter shall be equipped with only 1 motorized operator. The shutter operator is equipped with built-in limit switch, built-in thermal protector, built-in brake release system, manual hand chain, and one unit of 3-ways push button (Up, Stop, Down) switch with cylinder lock integrated in a stainless steel cover. The limit switch shall ensure the shutter stops automatically at desired levels. In the event of power failure, the shutter can be operated manually by pulling the hand chain.

Power Requirements

The power source shall be single phase 230V x 13amp or 3-Phase 415V x 20amp, 50Hz each depending on the size of the shutter. 

Operating System

Motorized roller shutter can be operated by using the push button, which is located approximately 1.5 meters above floor level without counter balance system.

Fusible Link

The fusible link is a mechanical mechanism which shall activate the shutter to close and isolate fire when the fuse with a melting point of 69-degree Celsius melts. It shall descend the shutter down via gravity and gradually stopped upon closing for safety reasons.

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