Introduction:
- CNTN Electric molded case circuit breakers feature an insulation voltage of 800V. Except for model ZMM1‑63 rated at 400V, other models suit AC circuits up to 690V/50Hz with rated current from 63A to 800A, designed for infrequent switching of motor circuits.
- This series of molded-case circuit breakers integrates overload, short-circuit, and undervoltage protection functions, effectively safeguarding power distribution lines and electrical equipment while preventing equipment damage caused by various electrical faults.
- The circuit breakers manufactured by CNTN Electric feature robust short-circuit breaking capabilities, rapid arc-extinguishing speeds, and outstanding safety performance; providing users with reliable protection, they represent an ideal choice for power distribution equipment.
- The 1-pole MCCB is constructed from highly flame-retardant materials, offering efficient arc suppression as well as protection against dust, moisture, and electric shock. It can be installed directly within cabinets or outdoor enclosures, thereby eliminating the risk of accidental contact with live components.
- This Molded Case Circuit Breaker (MCCB) offers versatile and flexible installation options, supporting fixed, plug-in, and withdrawable configurations. Furthermore, it accommodates both vertical and horizontal mounting orientations, thereby meeting the diverse requirements of various power distribution layouts.
- Our MCCB is suitable for three-phase four-wire circuits, and can also be used for three-phase three-wire and three-phase two-wire circuits.
- CNTN Electric not only manufactures 1 Pole MCCB circuit breakers in AC types, but also produces DC molded case circuit breakers.
- CNTN Electric not only produces MCCBs with white covers made of bakelite, but also produces MCCBs with gray and black covers made of plastic.
- Would you like to know the price of our 1 Pole MCCB ? Please contact us for more details now!
Technical data
| Type | ZMM1-63 | ZMM1-125 | ZMM1-160 | ZMM1-250 | ZMM1-400 | ZMM1-630 | ZMM1-800 | ||||||||
| Plose | P | 3 | 3,4 | 2,3 | 3,4 | 3 | 2,3,4 | 3,4 | 3,4 | 3,4 | |||||
| Rated current In | A | 10, 16,20, 25,32, 40,50, 63 | 10, 16,20, 25,32, 40,50, 63,80, 100, 125 | 100,125,140,160 | 100, 125,140 160,180, 200225, 250 | 225,250,315,350,400 | 400,500,630 | 630,700,800 | |||||||
| Rated insulation voltage Ui | V | 500 | 800 | ||||||||||||
| Rated impulsewithstand voltage Uimp | V | 6000 | 8000 | ||||||||||||
| Rated operation voltage Ue | V | AC400 | AC400/690 | ||||||||||||
| Breaking capacity class | L | M | L | M | L | L | M | L | M | L | M | L | M | ||
| Limit short-circuitbreaking capacity Icu | kA | 230V | 35 | 50 | 35 | 50 | 35 | 35 | 50 | 50 | 75 | 50 | 75 | - | - |
| 400V | 25 | 35 | 25 | 50 | 35 | 35 | 50 | 50 | 65 | 50 | 65 | 75 | 75 | ||
| 690V | - | - | 8 | 10 | 8 | 8 | 10 | 10 | 20 | 10 | 20 | - | 30 | ||
| Working short-circuit breaking capacity Ics | kA | 230V | 18 | 50 | 18 | 50 | 22 | 22 | 50 | 50 | 50 | 50 | 50 | - | - |
| 400V | 18 | 22 | 18 | 25 | 18 | 18 | 25 | 35 | 32.5 | 35 | 42.5 | 50 | 50 | ||
| 690V | - | - | 4 | 5 | 4 | 4 | 5 | 5 | 10 | 5 | 10 | - | 15 | ||
| Arcing distance | mm | 50 | 100 | ||||||||||||
| Operating frequency | Electrical life | 3000 | 3000 | 3000 | 3000 | 2000 | 2000 | 2000 | |||||||
| mechanical life | 20000 | 20000 | 20000 | 20000 | 10000 | 10000 | 10000 |
Codes for release devices and accessories
ZMM1-125 (L, M) front panel wiring (2-pole, 3-pole, 4-pole) (X-X, Y-Y are the centers of the 3-pole circuit breaker)
ZMM1-125 (L, M, H) Plug-in Front Panel Wiring (3-pole) (X-X, Y-Y are the centers of the 3-pole circuit breaker)
