Products Power Distribution Equipment

Pump Motor Starter Cabinet

Material: carbon steel
Color: Gray
Place of Origin: Shanxi, China
Application: Industrial
Product Category: Power Distribution Equipment

This product is a dedicated starting and control device for water‑pump motors, compatible with AC 380 V low‑voltage systems. It covers a control power range from 0.18 kW to 280 kW and supports multiple starting modes including direct‑on‑line starting, star‑delta reduced‑voltage starting, auto‑transformer reduced‑voltage starting and soft starting. Integrated multi‑protection functions cover overload, phase‑loss, short‑circuit, earth‑leakage, motor over‑temperature and pump body water leakage. It offers control modes for single‑pump / multi‑pump operation, automatic change‑over between main and standby pumps, as well as automatic liquid‑level and pressure‑based control. Manufactured from high‑quality steel, the cabinet reaches an ingress‑protection rating of IP30‑IP55. It is widely used for water‑pump control in water supply‑drainage, fire‑protection, HVAC and industrial circulation applications.

‑ Rated Voltage: AC 380 V, 50 Hz
‑ Controlled Motor Power: 0.18 kW ~ 280 kW
‑ Starting Modes: Direct‑on‑line starting / star‑delta reduced‑voltage starting / auto‑transformer reduced‑voltage starting / soft starting
‑ Control Modes: Manual / Automatic / Remote
‑ Protection Functions: Overload, phase loss, short‑circuit, earth‑leakage, motor over‑temperature, pump‑body water leakage, dry‑run protection
‑ Ingress Protection Rating: IP30 (standard) / IP55 (optional)
‑ Compliance Standard: GB 7251.1
‑ Mechanical Endurance: ≥ 10 000 operations

① Multiple optional starting modes. Suitable starting schemes can be selected according to pump power and grid conditions. Reduced‑voltage or soft starting for high‑power pumps lowers inrush‑current impact on the power grid and prevents water‑hammer effects.

② Comprehensive protection suite. Built‑in protections include motor overload, phase loss, short‑circuit, earth‑leakage, over‑temperature, plus dedicated protection against pump leakage and dry‑run conditions. It fully safeguards pump motors and pipeline systems and extends service life.

③ Intelligent control logic. It links with liquid‑level, pressure, temperature and other sensors to realize automatic pump start‑stop, constant‑pressure water supply and automatic rotation between main and standby pumps, eliminating the need for on‑site manual attendance.

④ Well‑engineered cabinet structure. Internal wiring is neatly arranged with sufficient operating space. The door is fitted with voltmeter, ammeter, running indicator lights and start‑stop buttons for simple operation and convenient maintenance.

⑤ Wide application adaptability. It meets water‑pump control requirements for domestic water supply, fire sprinkler systems, sewage discharge, air‑conditioning circulation, agricultural irrigation and other working conditions.

‑ Urban and rural municipal water‑supply booster pump stations
‑ Secondary water supply and fire‑sprinkler systems for high‑rise buildings
‑ Recirculating cooling‑water systems for industrial facilities
‑ Sewage lifting and discharge systems in wastewater‑treatment plants
‑ Control for deep‑well pumps and submersible pumps in water‑saving agricultural irrigation
‑ Chilled / hot‑water circulation pump control for HVAC systems
‑ Drainage‑pump control for mines and tunnels

Q1: Which starting mode should be chosen for pumps of different power ratings?
A: Direct‑on‑line starting is generally applicable for small‑power pumps below 15 kW. Star‑delta reduced‑voltage starting is recommended for pumps from 15 kW to 132 kW. Auto‑transformer reduced‑voltage starting can be adopted for pumps rated 15 kW‑200 kW. Soft starting is preferred for high‑power pumps or scenarios requiring smooth startup performance.

Q2: Can this starter cabinet realize one‑operating‑one‑standby control?
A: Yes. Multi‑pump control modes such as one‑operating‑one‑standby and one‑operating‑two‑standby can be customized. The standby pump will automatically engage upon main‑pump failure to guarantee continuous water‑supply or drainage operation.

Q3: Does it support water‑shortage protection?
A: Yes. When paired with liquid‑level sensors, the pump will shut down automatically under low‑water‑level conditions to avoid equipment damage caused by dry‑run operation.