Low Voltage Switchgear (0.4kV~0.69kV)

The ZTMNS Series is a modular, withdrawable-type low-voltage switchgear system engineered for power distribution and motor control. lt is widely deployed across industrial plants, commercial complexes, and critical infrastructure projects.

Product Description

ZTMNS series is a low-voltage withdrawable switchgear system designed for circuit protection and control,standards compliance(IEC 61439/ GB/T 7251).Key Components including circuit breaker,current transformer,voltage transformer,disconnection switch etc.Protection mechanism is when fault (Short-circuit ,Overload,Ground fault)is detected,CT/PT detect abnormal parameters,then protection relay triggers, breaker opens,fault isolation confirmed via auxiliary contacts finally.The control circuits within the control cabinet can achieve remote or local operation of the isolating switch and circuit breaker, including closing and opening, etc. The current transformer and voltage transformer provide the necessary information for the protection device and measuring instrument to monitor the circuit status and make necessary data records.

Product Advantages

Modular drawer-type structure： Standard drawer unit height: 8E (200mm) / 16E (400mm), supports hot swapping (rated current ≤ 630A). The drawer mechanical interlock ensures “closing cannot be shaken out, and the separation position can be locked”.
High segment capacity： Main bus short-time withstand current: 50kA – 100kA (1s)
Intelligent management： Integrated digital instruments, power quality monitoring, wireless temperature measurement (optional). Supports Profibus, Modbus TCP communication, seamlessly integrated with SCADA system.
Safety protection： Protection level: IP30 – IP43 (upgradeable dust and waterproof). The cabinet body is made of galvanized steel sheet / stainless steel, with strong corrosion resistance.
Flexible configuration： Can be combined with various functional units such as incoming/outgoing panel, capacitor compensation cabinet, and motor control cabinet.

Key Technical Parameters of ZTMNS Switchgear

Feature	unit	Specification
Rated voltage	V	690、415、400
Rated frequency	Hz	50/60
Main busbar rated current	A	400~1600	1600~4000	4000~6300	4000~7500
Main busbar Rated short time withstand current	kA	30	80	100	130
Ingress Protection	/	IP30、31、40、41、42、43
Enclosure dimensions(WxDxH)mm	mm	600(800、1000、1200、1400、1600)×600(800、1000、1200) ×2200

It is widely applied in industries such as power grids, data centers, petrochemicals, industrial and mining enterprises, and municipal engineering.

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Low Voltage Switchgear (0.4kV~0.69kV)

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