They are environmentally friendly, versatile, and flexible. Our NEMA contactors are known for rugged construction, dependable performance, and long electrical life. Our products also have a variety of enclosures to suit various application needs. They are environmentally friendly, versatile and flexible. These contactors can protect your other devices while delivering the performance you expect.
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WordPress Shortcode. Published in: Engineering. Full Name Comment goes here. Are you sure you want to Yes No. Be the first to like this. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. A wide range of accessories makes installation and wiring easy.
Use motor nameplate full load current and choose the motor starter with the appropriate current range. Example: Motor F. Select Cat. Use motor nameplate full load current times 0. National Electrical Codes. Electrical Codes. Short Circuit Current Max. Insert voltage selected at the end of Cat.
Example: Cat. Not compatible with locking attachment Cat. Description For Use With Pkg. Accepts up to 8. Note: Not compatible with pilot lights. ID is the maximum cut-off current highest instantaneous value of the limited short-circuit current.
This value is indicated in the following diagrams as a function of the progressive system short-circuit current. Protected Min. The maximum possible tripping current is substantially lower than in fused overload protection. Short-circuit protection is provided by the non-adjustable magnetic release which is capable of opening the main contacts very quickly.
The short total breaking time limits temperature rise in the lead to a minimum in the event of a short-circuit. ForwardEnergyidt[10As] In equipment at operating temperature, release time is less than or equal to release time from the cold state. The precise routine test guarantees motor protection even when a phase is interrupted. Such protection equipment must ensure motor protection even in the event of a phase failure.
In motors with a rated output greater than 3 kW, additional protection devices must be provided which ensure motor protection even in the event of a phase failure. At the upper thermal release setting, this tripping current is 11 times MN or 14 times CMN the set current; at a lower setting it is correspondingly higher.
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Motor Control Contactors
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