Trip Unit for CNSX

MX Shunt Release MN Undervoltage Release for CNSX CNSV CNS CNSD

TM-D thermal-magnetic trip units

TM-D, for protection of cables on distribution systems supplied by transformers

Protection

Thermal protection (Ir)
Thermal overload protection based on a bimetal strip providing an inverse time curve
I2 t, corresponding to a temperature rise limit. Above this limit, the deformation of the
strip trips the circuit breaker operating mechanism.
This protection operates according to:

  • Ir that can be adjusted in amps from 0.7 to 1 times the rating of the trip unit (16 A to
    250 A), corresponding to settings from 11 to 250 A for the range of trip units
  • a non-adjustable time delay, defined to ensure protection of the cables.

Magnetic protection (Im)
Short-circuit protection with a fixed or adjustable pick-up Im that initiates
instantaneous tripping if exceeded.

  • ●TM-D: fixed pick-up, Im, for 16 to 160 A ratings and adjustable from 5 to 10 x In for
    200 and 250 A ratings
  • ●fixed pick-up for 16 to 63 A ratings.

Protection against insulation faults
Two solutions are possible by adding:

  • a Vigi add-on acting directly on the trip unit of the circuit breaker
  • a Vigirex relay connected to an MN or MX voltage release.

MicroLogic 2 trip unit

Circuit breakers equipped with MicroLogic 2 trip units can be used to protect,distribution systems supplied by transformers. For generators and long cables, MicroLogic 2 G trip units offer better suited low pick-up solutions
Protection
Settings are made using the adjustment dials with fine adjustment possibilities
Overloads: Long time protection (Ir)
Inverse time protection against overloads with an adjustable current pick-up Ir set using a dial and a non-adjustable time delay tr.
Short-circuits: Short-time protection with fixed time delay (Isd)
“Protection with an adjustable pick-up Isd. Tripping takes place after a very short
delay used to allow selectivity with the downstream device.”
Short-circuits: Non-adjustable instantaneous protection
Instantaneous short-circuit protection with a fixed pick-up.
Indications
Front indications
·Green “Ready” LED: flashes slowly when the circuit breaker is ready to trip in the event of a fault.
·Orange overload pre-alarm LED: steady on when I > 90 % Ir.
·Red overload LED: steady on when I > 105 % Ir.

Remote indications
An overload trip signal can be remoted by installing an SDx relay module inside the circuit breaker.
This module receives the signal from the MicroLogic electronic trip unit via an optical link and makes it available on the terminal block. The signal is cleared when the circuit breaker is reclosed.

MicroLogic 1.3 M for magnetic protection only
MicroLogic 1.3 M trip units provide magnetic protection only, using electronic technology. They are dedicated to 400/630 A 3-poles (3P 3D) circuit breakers or 4-pole circuit breakers with detection on 3 poles (4P, 3D) and are used in certain applications to replace switch-disconnectors at the head of switchboards. They are especially used in 3-poles versions for motor protection

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      Advantage

      • High precision mold 500+ sets
      • Products exhibit exceptional craftsmanship
      • 48-Hour Anti-Saltspray
      • 20,000+ Life Time
      • High Breaking Capacity up to 100kA
      • -25℃ Min Temperature

      Customized to your design

      Manufacture products based on customer’s complete specifications.

      Customers provide comprehensive specifications documents covering all product details, specifications include complete technical drawings, bill of materials, material/component requirements, and all dimensions, our Engineering and manufacturing team reviews specifications to ensure producibility, we can also provide some new ideas to help you make your product better!

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        Frequently Asked Questions

        A: We are professional manufacturer in industrial electrical equipment since 1992. Welcome to have online/offline factory tour for further communication.

        A: Sure, please send us an inquiry and tell us your demand, we have a professional team to support you in model selection til the order is placed.

        A: Moulded Case Circuit Breaker, Air Circuit Breaker, Earth Leakage Circuit Breaker, Miniature Circuit Breaker, Contactor, Motor Protection Circuit Breaker, etc.

         

        A: We strict in high quality. Products has low temperature rise, long life time and good corrosion resistance. Our materials are Mitsubishi PC, DuPont PA66, DMC-A/DMC-2, metal coating-corrosion resistance 72 hours, T2 copper bar, T2 copper pillar, T2 copper plate. All Products pass the test of CQC,CE,CB and TUV.

         

        A: Yes, 24 months warranty, and our products are 100% inspected. If any problems, let us know immediately, and we will give a satisfactory solution.

        A: Yes, 100% inspection. Products passed all tests: micro resistance test, withstand voltage test, temperature rise test, short time delay characteristic test, long time delay characteristic test and instantaneous trip test for each phase.

        A: Yes sure, we provide OEM/ODM/OBM/OPM service, consult us for details like MOQ and design.

         

        A: Usually it takes about 25 days for production. If you have urgent requirements, please send us a list to check the stock. We have sufficient stock for materials.

         

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        A: For transportation issues, we will assist in troubleshooting and provide accessories and guidance. If the product cannot be repaired, we will send you replaced one in the next order. For installation issues, we will provide installation instructions or video guidance.

         

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