OXBOX BY TRANE AIR HANDLER ELECTRIC HEAT KIT, 8 KW, R454B

Heating capacity: 8 kW nominal. (as indicated by “8 kW / R-454B” labeling)

Compatibility: Designed for air handlers in the OXBOX R-454B line (multi-position upflow/downflow/horizontal), per the product line documentation.

Part number: 5JAYHTR1A08BKA (some variants may suffix differently, e.g., “08BK” etc).

Electrical characteristic: The installation/operation manual shows for 8 kW heater kit: Min. circuit ampacity and max fuse or breaker values. For example: “7.5 kW heater → 39.1 A min ampacity at 240 V” (table lists 7.5 kW but the “08BK” variant likely similar).

Installation requirements: The manual emphasises that when electric heater kits are installed, the ductwork must comply with NFPA 90A/90B standards. Also, since R-454B is an A2L refrigerant, additional safety/ventilation/leak-detection provisions apply.