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Circuit Breakers

Circuit breakers are manual switches that open under overload conditions. Circuit breakers discussed here are general-purpose types that meet the minimum Underwriters' Laboratories Inc. (UL) standards. Heavy-duty types used in power distribution systems such as oil-filled types, are not included. Thermal, compensated-thermal, and thermal-magnetic breakers depend on heat for tripping. Therefore, their characteristics differ only slightly when used on ac or dc. Operating qualities of hydraulic-magnetic breakers vary because of the magnetic pulses on ac, as compared to the constant pull of dc. On ac, the impedance changes as an iron core moves into the coil. Hydraulic-magnetic breakers have a different ampere-turn ratio for ac than for dc; thus, they should be used on their respective types of current. This is also true of 400 and 60-Hz breakers. An instantaneous circuit breaker responds to a predetermined value of overload without any purposely delayed action. Any small surge or inrush of current causes the
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Electromechanical Counters
Electromechanical counters are used to detect, totalize, and indicate a sequence of events. They typically accept electric or electronic inputs to operate mechanical outputs such as rotating wheels or knobs. These devices may count UP and/or DOWN, support multiple functions, and provide reset capabilities.
IC Timers
IC timers are semiconductor circuits that generate or set timing for electronic circuits.
Electromechanical Timers
Electromechanical timers are used to start or stop a machine or other device at preset or delayed intervals. They consist of both electrical and mechanical components, and often feature an electric motor that drives one or more gears. They typically accept electric or electronic inputs to operate a mechanical output such as rotating wheels or knobs.
Digital Counters
Digital counters are electronic devices that perform a variety of counting functions. They may count single actions, provide totalizing, or perform other calculations.
Time Delay Relays
Time delay relays and solid state timers use solid state electronic devices to provide a time delay.
Product Announcements
NSI Industries LLC - Custom Electromechanical Counters & Timers
NSI Industries LLC manufactures custom electromechanical counters and timers to match your specifications. (read more)
NSI Industries LLC - Custom Electromechanical Timers
NSI Industries LLC manufactures custom electromechanical timers to match your specifications. (read more)
NSI Industries LLC - Custom Electronic Counters
NSI Industries LLC manufactures custom electronic counters and timers to match your specifications. (read more)
NSI Industries LLC - Custom Mechanical Timers
NSI Industries LLC manufactures custom mechanical timers to match your specifications. (read more)
NSI Industries LLC - Custom Electronic Timers
NSI Industries LLC manufactures custom electronic timers to match your specifications. (read more)
NSI Industries LLC - Custom Electrical Connectors
NSI Industries LLC manufactures custom electrical connectors to match your specifications. (read more)
NSI Industries LLC - Custom Lighting Controls
NSI Industries LLC manufactures custom lighting controls to match your specifications. (read more)
Hood-EIC, LLC - Custom CNC Machining
Hood-EIC, LLC manufactures custom CNC machining to match your specifications. (read more)
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