NTMA21 Molded Case Circuit Breaker-Natus Electric Group Co., Ltd.

Manufacture

High voltage switch cabinet

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Low voltage switch cabinet

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High and low voltage components

NTAA21 Series Intelligent Air Circuit Breaker NTAA22 Intelligent Air Circuit Breaker NTAA23 Intelligent universal circuit breaker NTMA11 Series thermomagnetic molded case circuit breakers NTMA21 Series electronic molded case circuit breakers NTMA31 Series thermomagnetic molded case circuit breakers NTBA11-32 Miniature Circuit Breaker Miniature Circuit Breaker NTBA11-63 Miniature Circuit Breaker NTBA12-63 Residual Current Circuit Breaker NTBD11-63 DC circuit breaker NTBA11-80 Miniature Circuit Breaker NTBA12-80 Residual Current Circuit Breaker NTBA11-100 Miniature Circuit Breaker NTBK11-100, 125 disconnectors NTDT81 Dual Power Switch (PC Class) NTDT82 Dual Power Switch NTDT83 Dual Power Switch NTDD51 Disconnectors NTII81 Electrical Intelligent Meter NTQR51 Anti-harmonic Reactor NTQC51 Self-healing low-voltage shunt capacitor NTQC52 Cylindrical Capacitors NTIF81 Intelligent reactive power compensation controller NVT-12 Embedded-pole medium voltage vacuum circuit NTAA81 Air Circuit Breaker NTMA22 Large Molded Case Circuit Breaker NTMA21 Molded Case Circuit Breaker NTQF81 Active Power Filter NTQV81 Static Var Generator NTCA51 Series AC Contactor NTRT51 Series Thermal Relay NTPM81 Motor Protector NTSA81 Series Soft Starter NTSA82 Series Soft Starter NTFA81 Series Inverter NTMM81 Series Smart Measurement Switch NTJC51 Series Quick Connect Socket NTJC52 Quick Connector Socket NTJC53 Pole-Mounted Quick Access Device NTJC54 Quick Access Device NTBM11 Miniature Circuit Breaker NTP081 Self-resetting Over-voltage Protector NTDD81 Series Isolation Switch NTPA81 Intelligent Arc Protection Device NTDS51 Thyristor Switch
Busbar

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The NTMA21 series electronic molded case circuitbreakers (hereinafter referred to as circuit breakers") have arated insulationvoltage of up to 1000v. They are suitable forpower distribution circuits with a frequency of 50Hz, a ratedoperational voltage of up to 690V, and a rated operationalcurrent of up to 1250A, providing infrequent circuitconversion. These circuit breakers feature long-time delay,short-time delay, and instantaneous short-circuit protectionfunctions, safeguarding lines and equipment against damage.The circuit breaker can be mounted vertically or horizontally.It features an isolation function, and its corresponding symbolis

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