

API CAPACITORS LTD
About us
API Capacitors stands out as a prominent UK-based company specialising in the design and manufacture of high-quality power capacitors tailored for a variety of power electronic applications. Our comprehensive selection includes filter capacitors, snubber capacitors, and energy storage capacitors, which are integral to industries such as rail traction, industrial drives, power conditioning, and avionics. Additionally, we offer discharge capacitors designed for critical medical, plasma and pulsed power applications. The company's commitment to excellence is evident in our approach to customer service, where we work closely with clients to ensure that each product is customised to meet the specific needs of its application, guaranteeing performance and reliability. With a history of providing solutions for both civil and military aerospace, as well as marine propulsion and medium voltage drives, API Capacitors has established itself as a trusted partner in the capacitor market by offering:
Reverse engineering - We analyse the structure and performance of physical capacitors to develop and improve more effective alternatives.
Customised engineer solutions - We design and build capacitors for specific applications, tailored to precise specifications.
Exclusive part numbers - We design products with exclusivity in mind and can offer unique, dedicated part numbers.
White-label designs - We design and manufacture capacitors for white-label and onward sales and can integrate client branding.
Specialist high voltage testing - We have specialist equipment that enables us to provide high-voltage testing capabilities.
Rapid prototyping - We provide prompt preliminary designs and prototype capacitors with favourable lead times, subject to the availability of technical data.
Products & services

DC Link Capacitor for Busbar Mounting
EV & Similar Applications

AC Track Circuit Capacitors
Capacitors for AC Jointless Track Circuits VT1 & VT1 SP our speciality.

Snubber Capacitors
Mixed dielectric versions available & all metallised film variants too

Custom & Non Stand Capacitor Types
Need a capacitor that fits an unusual space envelope?

AC Capacitors
A range of AC capacitors for lower voltage systems and harmonic filtering applications (not input protection)

DC Capacitors
All metallised film capacitors for a variety of DC applications

Pulse Capacitor
Are you working in the fusion sector, do you need energy storage/pulse capacitors? Give us a try.