Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Self Electronics
The Self Electronics JB-4A(UL) is an industrial component featuring a single output and a protective plastic case with an IP20 rating. This model is utilized for cavo led applications. Submit the exact part number, quantity, and application requirements for a quote.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Self Electronics references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Self Electronics JB-4A(UL). Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.