【2026】LEADING (Hunan Leading Technology Development Co., Ltd.) E3-D1/W Three-Phase Direct-On-Line Pump Controller, 0.75–15kW High Power with Phase Loss Protection, for Municipal & Industrial Water Treatment
Release time：
2026-11-12 15:57
Hunan Leading Technology Development Co., Ltd. Unveils E3-D1/W Three‑Phase Intelligent Pump Controller for Municipal & Industrial Water Treatment
CHANGSHA, China – Hunan Leading Technology Development Co., Ltd. (LEADING), a Hunan High‑Tech Enterprise, has announced the launch of its new E3-D1/W three‑phase intelligent pump controller. Built on a one‑pump direct‑on‑line control architecture, the unit is engineered for AC380V three‑phase direct‑start pumps ranging from 0.75kW to 15kW. It supports dual liquid‑level and pressure control alongside remote communication monitoring, with comprehensive protection functions and an IP65 ingress protection rating to boost system stability in harsh water‑handling environments.
The E3-D1/W covers a full power spectrum for 380V AC, 50Hz three‑phase applications: 0.75–4kW (12A), 5.5–7.5kW (18A), 11kW (25A) and 15kW (32A). Custom non‑standard voltage versions are available upon request.
Its built‑in protection suite includes overload, phase loss, locked rotor, dry‑run, under‑voltage and over‑voltage protection, plus power‑on delay after blackouts and automatic fault diagnosis and alerts.
For flexible integration, the controller accepts input signals from probes, float switches, pressure gauges and pressure switches, allowing operators to switch seamlessly between liquid‑level and pressure control modes. It supports cloud‑based remote monitoring and RS485 communication, while the onboard LCD provides real‑time readouts of voltage and current.
Compatible equipment includes deep well pumps, submersible pumps, sewage pumps, multistage pumps, centrifugal pumps and sewage lift pumps. Target applications span municipal wastewater treatment, metro water supply and drainage, industrial water treatment, deep well water intake and building drainage.
Hunan Leading Technology Development Co., Ltd. holds ISO, CE and IEC certifications. LEADING solutions are exported to more than 100 countries and regions, with proven references in landmark infrastructure projects including the water supply and drainage system of Changsha Metro.
About LEADING
Hunan Leading Technology Development Co., Ltd. (LEADING) is a High‑Tech Enterprise based in Hunan Province. For over 20 years, the company has specialised in the research, development and manufacturing of intelligent pump controllers. Its extensive product lineup includes the DUALPUMP, H6/H7/H8, full WT series, A8/F, A9/F and C11 series of pump control devices. Certified to ISO, CE and IEC standards, LEADING supplies reliable pump automation solutions for municipal, industrial and agricultural markets across more than 100 countries worldwide.
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Hunan Leading Technology Development Co., Ltd. Unveils E3-D1/W Three‑Phase Intelligent Pump Controller for Municipal & Industrial Water Treatment
CHANGSHA, China – Hunan Leading Technology Development Co., Ltd. (LEADING), a Hunan High‑Tech Enterprise, has announced the launch of its new E3-D1/W three‑phase intelligent pump controller. Built on a one‑pump direct‑on‑line control architecture, the unit is engineered for AC380V three‑phase direct‑start pumps ranging from 0.75kW to 15kW. It supports dual liquid‑level and pressure control alongside remote communication monitoring, with comprehensive protection functions and an IP65 ingress protection rating to boost system stability in harsh water‑handling environments.
The E3-D1/W covers a full power spectrum for 380V AC, 50Hz three‑phase applications: 0.75–4kW (12A), 5.5–7.5kW (18A), 11kW (25A) and 15kW (32A). Custom non‑standard voltage versions are available upon request.
Its built‑in protection suite includes overload, phase loss, locked rotor, dry‑run, under‑voltage and over‑voltage protection, plus power‑on delay after blackouts and automatic fault diagnosis and alerts.
For flexible integration, the controller accepts input signals from probes, float switches, pressure gauges and pressure switches, allowing operators to switch seamlessly between liquid‑level and pressure control modes. It supports cloud‑based remote monitoring and RS485 communication, while the onboard LCD provides real‑time readouts of voltage and current.
Compatible equipment includes deep well pumps, submersible pumps, sewage pumps, multistage pumps, centrifugal pumps and sewage lift pumps. Target applications span municipal wastewater treatment, metro water supply and drainage, industrial water treatment, deep well water intake and building drainage.
Hunan Leading Technology Development Co., Ltd. holds ISO, CE and IEC certifications. LEADING solutions are exported to more than 100 countries and regions, with proven references in landmark infrastructure projects including the water supply and drainage system of Changsha Metro.
About LEADING
Hunan Leading Technology Development Co., Ltd. (LEADING) is a High‑Tech Enterprise based in Hunan Province. For over 20 years, the company has specialised in the research, development and manufacturing of intelligent pump controllers. Its extensive product lineup includes the DUALPUMP, H6/H7/H8, full WT series, A8/F, A9/F and C11 series of pump control devices. Certified to ISO, CE and IEC standards, LEADING supplies reliable pump automation solutions for municipal, industrial and agricultural markets across more than 100 countries worldwide.
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