12508 AMEREX KP SERIES DETECTOR KIT - OEM

The Amerex 12508 KP Series Detector Kit provides the essential mounting hardware for a single thermal detection point in Amerex KP kitchen fire suppression systems. Each kit includes a detector bracket, scissor linkage, and two EMT conduit fittings — everything needed to establish one complete detection station in the hood plenum. The kit is designed to be paired with a fusible link (sold separately), which is inserted into the scissor linkage to hold the detection cable under tension. When the fusible link melts at its rated temperature, it releases that tension and triggers the system discharge.

The 12508 detector kit is a foundational kitchen fire suppression system components item — every Amerex KP installation requires one kit per detection point, and most commercial kitchen configurations require multiple detection points to cover all protected appliances. Using the OEM 12508 kit ensures the bracket geometry, scissor linkage dimensions, and conduit fitting specifications all match the Amerex KP system manual design requirements, maintaining the UL 300 listed coverage of the complete system.

For fire protection contractors managing new Amerex KP system installations or full system rebuilds, the 12508 is one of the highest-volume items in the amerex fire suppression system parts order. Keeping detector kits stocked alongside fusible links, s-hooks, cable segments, and conduit supplies ensures a complete installation job can be completed in a single visit without waiting on back-ordered components. At every semi-annual service inspection, detector brackets and scissor linkages should be checked for corrosion and alignment — and replaced with new 12508 kits when any component shows wear or damage.

Detector Positioning

Install the detector bracket per the Amerex KP system manual positioning requirements for each appliance type. The fusible link must be located directly above the cooking surface at the correct height to detect the heat plume produced by the protected appliance. Incorrect positioning is one of the most common UL 300 compliance failures during AHJ inspections — the thermal link must be within the detection zone specified in the Amerex KP system design for each appliance.

Scissor Linkage Tensioning

After threading the detection cable through the conduit fittings and connecting through the scissor linkage, verify the cable is under the correct tension per the Amerex KP system manual. Too little tension may allow the cable to sag and delay activation; too much tension can cause nuisance trips. Use the Amerex tension verification procedure during system commissioning and at every semi-annual inspection.

Semi-Annual Inspection

During NFPA 17A and NFPA 96 semi-annual inspections, inspect each detector bracket for corrosion or physical damage, verify the scissor linkage opens and closes freely, and check the conduit fittings are secure and grease-tight. Replace any components showing damage with a new 12508 kit — partial component replacement is not recommended as it can introduce dimensional mismatches between old and new hardware.

Is the fusible link included in the 12508 kit?

No. The 12508 provides the mechanical mounting hardware only — detector bracket, scissor linkage, and conduit fittings. The fusible link must be purchased separately. Specify the correct fusible link temperature rating for each appliance type per the Amerex KP system design. Common ratings for commercial kitchen applications include 165°F for back shelf and low-heat positions and 212°F or higher for positions above open fryers.

How many 12508 kits does a typical KP installation require?

Each detection point requires one 12508 kit. A typical commercial kitchen with 8-10 appliances protected by the Amerex kitchen suppression system may require 8-15 or more detection points depending on the appliance types and nozzle layout. Review the Amerex KP system manual design for your specific kitchen configuration to determine the correct number of detector kits required.

Can the 12508 be used in Pyro-Chem or Range Guard systems?

No. The 12508 is specifically designed and listed for Amerex KP systems. Pyro-Chem and Range Guard kitchen fire suppression system components use their own detector kit hardware with different bracket and linkage geometries. Always match detector hardware to the system manufacturer to maintain UL 300 compliance.