Fire-Rated Isolators

In environments such as underground car parks, commercial basements, or critical smoke-extraction zones, the threat posed by smoke and heat in a fire is often greater than flames themselves. SCAME’s ISOLATORS-FR Fire-Rated Isolators are purpose-engineered enclosed switch-disconnectors that continue to perform reliably at fire-critical conditions—withstanding temperatures up to 400 °C for 120 minutes, as per EN 12101-3 (“Smoke and heat control systems. Specification for powered smoke and heat exhaust ventilators”) .

These products are indispensable in ensuring the continuous and safe operation of smoke extraction fans and systems, offering both life safety and asset protection.

Why Choose Fire-Rated Isolators?

1. Proven Fire Resistance
   The ISOLATORS-FR range is rigorously tested and rated F400-120, certified by AFITI LICOF, a leading fire-safety technologies authority.

2. Robust Housing
   Constructed from Glass-Reinforced Polyester (GRP), these units provide exceptional heat resistance (GW 960°C) and dimensional stability under extreme conditions.

3. Safety Interlocks & Lockout
   Every unit features a door interlock, plus a padlockable handle that can lock in both ON and OFF positions—ON with one padlock, OFF with up to three—ensuring full compliance with lock-out/tag-out safety protocols

Product Range & Specifications

• ISOLATORS-FR (63A Model) – Model 590.FEM6305

• Rated Current: 63 A across AC21A, AC22A, AC23A at 415 V

• Rated Voltage (Ue): up to 690 V

• Poles: 3P+N

• Protection: IP65, IK10

• Housing: Die-cast aluminium

• Dimensions: 217 × 253 × 93 mm

• Switch Size: FR2

• Mechanical & Thermal Tolerances: up to 63 A; short-time withstands 1.5 kA (1 s), conditional short-circuit 30 kA eff; gG fuse 63 A; wiring terminals up to 50 mm²

ISOLATORS-FR (160A Model) – Model 590.FEM16005

• Rated Current: 160 A across AC21A, AC22A, AC23A at 415 V

• Rated Voltage (Ue): 690 V

• Poles: 3P+N

• Protection: IP65, IK10

• Housing: Die-cast aluminium

• Dimensions: 315 × 410 × 150 mm

• Switch Size: FR3

• Short-time withstand: 3 kA (1 s), conditional short-circuit 69 kA eff; gG fuse 125 A; wiring terminals up to 70 mm²

Key Features at a Glance

• Certified Fire Performance: F400 for 120 minutes guaranteed via AFITI LICOF testing, conforming to EN 12101-3.

• Superior Material Integrity: GRP housing ensures minimal deformation and sustained integrity under extreme heat.

• High Mechanical & Environmental Protection: IP65 dust-tight and water protection, IK10 high-impact resistance.

• Maintenance & Security: Padlockable handles and door interlocks foster safe servicing and compliance with international safety procedures.

• Versatile Current Range: Available in 63 A and 160 A variants, adaptable to various smoke-extraction and emergency circuits.

• Solid Construction & Installation Ease: Die-cast aluminium body and surface-mount format simplify fast and safe deployment.

Typical Applications

• Smoke Extraction Fans in underground parkades, basements, and atriums.

• Emergency Ventilation Systems in tunnels, underground malls, and service corridors.

• Fire-Rated Power Systems for emergency generators and life-safety circuits.

• Large HVAC/Umbrella Systems requiring high reliability under fire stress.

• Industrial Safety Protocols where controlled shutdown with fire resilience is a necessity.

Liya Electricals – Your Trusted Partner in Qatar

As an Authorised SCAME distributor in Qatar, Liya Electricals W.L.L brings over two decades of excellence in electrical supplies, offering tailored solutions across commercial, industrial, and O&G sectors. Our team ensures compliance, performance, and reliability—backed by technical service and local support.

SCAME’s ISOLATORS-FR Fire-Rated Enclosed Switch-Disconnectors are the ideal solution where fire safety and uninterrupted operation of smoke-extraction systems are paramount. Tested to deliver up to 120 minutes of integrity under 400 °C, these units combine rugged die-cast aluminium construction, superior protection ratings (IP65, IK10), and essential safety features like padlockable interlocks. Available in 63 A and 160 A options, they suit various power requirements and ensure maintenance safety through clear lock-out procedures.

Partner with Liya Electricals, your authorised SCAME representative in Qatar, for expert advice, timely delivery, and technical excellence. When fire safety matters, rely on SCAME ISOLATORS-FR installed by Liya.