Ultra-low price CJ20-40A AC contactor

series of AC contactors with purpose and scope of application
Mainly used in power lines with AC rated voltage to individual levels and currents up to 1,000, for long-distance connecting and breaking circuits and frequent starting and controlling AC motors, and are suitable for use with Thermal relay or electronic protection device forms an electromagnetic starter to protect the circuit or AC motor from possible overload and phase failure.
Some common models
Some common models are Generally speaking, there may be and in the model, please be careful
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Three structural features
Column AC contact The contactor is a direct-acting double-breakpoint three-dimensional arrangement with a simple and compact structure. The overall installation size is greatly reduced compared with other series of old contactors.
The contactor is a three-layer, two-section structure without an arc extinguishing cover. The upper section is a thermosetting plastic body that fixes the auxiliary contacts, main contacts and arc extinguishing system. The lower section is a thermoplastic plastic base that installs the electromagnetic system and buffer device. The base In addition to the mounting holes for screws on the upper part, the lower part is also equipped with a lock for rail installation, which can be installed on the wide hat-shaped installation rail specified by the standard, making it easy to disassemble and assemble. Contactors of and above have a two-layer formal structure, with the main contacts and arc extinguishing chamber on the top, the electromagnetic system on the bottom, and two independent auxiliary contact assemblies arranged on both sides of the body. Use bakelite body and aluminum base.
The entire series of contactors of different capacity levels of the head arc extinguishing system adopt different arc extinguishing structures. and are double-breakpoint simple switching arc-extinguishing chambers, and are iron-shaped arc-extinguishing chambers. Arc extinguisher.
Series contactors use silver-based alloy contacts. Use contacts, and above use silver-based oxide contacts. The contact arc extinguishing system with excellent arc extinguishing performance is equipped with contact materials that are resistant to welding and wear, so that the product has a long electrical life and is suitable for working under particularly heavy conditions.
The magnetic system and below contactors use double-shaped cores, and the impact buffers and above use shaped cores and silicone rubber buffers.