CPI provides a wide variety of packaging options with any switch.
Circuit type – Normally Open/Closed and current requirements can be specified for any switch we build, including the challenge of designing for high startup loads. All with unique engineering challenges to achieve an overall requirement. 
Actuator Style – The actuator used for our momentary switch configurations can be specified: either plunger, lever, roller ball, or hand actuated pendant style switches. Mechanical Endurance – CPI has achieved MTBF of over 1 million cycles rated for high dynamic temperature environments, with careful design of mechanical switch parameters, and new manufacturing techniques for sealing. Contact travel and pre-travel – These critical parameters affect MTBF directly and must be adjusted to achieve the specified cycle lifetime. CPI has engineered our switches to avoid contact “freezing” at operating temperatures down to -20F. Some of the design considerations for our switches include the following: CPI’s design team is experienced at trading off the many conflicting design requirements necessary to achieve an overall goal for MTBF, cost, and electrical parameters that meets almost any momentary switch operating specification. 
If you have a high performance application that requires use of a momentary switch for a tough outdoor environment with potential extremes of high or low temperature, then you are probably going to need more than just switch waterproofing. Our panel mount waterproof plunger switches use any of our B series momentary switch types which are then mounted into an all-stainless steel casing with a thermoplastic mounting bushing and plunger. K1 Series– MIL-C rated, Neoprene V-Back, for pipe mount Waterproof Plunger Switches These switches are sealed in Neoprene and feature a larger actuator and a “v-back” for easy mounting on pipes and tubing. Really a specialized type of pendant switch, this switch family was developed to meet the needs of welders.
B2 Series– MIL-grade Neoprene, overmolded. B9 Series– low-temp Santoprene (ideal for E1 Limit Brackets). All switches may be specified with a variety of mechanical and electrical parameters (see below) including normally-open, normally-closed, or SPDT configurations. 
All switches are fully waterproof and come in a variety of casing materials suitable for a wide variety of Military, Industrial or Low temp applications. These pendant switches are hand activated and come in a standard and a “Light Touch” actuation version. Momentary Switches – Pendant Style Pendant Switches – Momentary ContactĬPI’s waterproof pendant switches see usage in environments that require long life under demanding applications in adverse outdoor conditions.
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