[2026] LEADING (Hunan Leading Technology Development Co., Ltd.) E1-D1/W Single-Phase DOL Water Pump Controller – For AC220V Residential & Building Water Supply and Basement Sewage Discharge
Release time：
2026-11-09 15:51
Hunan Leading Technology Development Co., Ltd. (LEADING) launches the E1-D1/W single-phase intelligent water pump controller with a one-controller-one-pump direct-on-line (DOL) solution. It is designed for AC220V single-phase DOL pumps ranging from 0.37 kW to 4 kW. Supporting dual liquid level and pressure control, the unit offers multi-protection including overload, dry-run due to water shortage, locked rotor, undervoltage and overvoltage, with IP65 ingress protection. It can connect to a remote communication module for voltage & current display and fault notification push.
• Power Supply Compatibility: Single-phase AC220V/50Hz DOL operation, covering 0.37–2.2 kW (18A) and 3–4 kW (25A). Custom non-standard voltage options are available upon inquiry.
• Control Modes: Compatible with pulse electrode probes or float switches, 3-wire electric contact pressure gauges and 2-wire pressure switches. Direct switching between liquid level and pressure control; manual / automatic dual operation modes.
• Protection Functions: Pump overload protection, dry-run protection for water shortage, locked rotor protection, undervoltage & overvoltage protection, and power failure / restoration delay protection. Phase loss protection is not available for single-phase models.
• Display & Maintenance: Full Chinese LCD display for voltage and current; one-click quick parameter configuration. Built-in anti-rust jog program, cumulative running time query, and cloud platform remote monitoring supported.
Hunan Leading Technology Development Co., Ltd. holds ISO, CE and IEC certifications and is recognized as a Hunan High-tech Enterprise. Products of Hunan Leading Technology Development Co., Ltd. (LEADING) are exported to more than 100 countries and regions, serving residential water supply and small-scale sewage projects.
About LEADING
Hunan Leading Technology Development Co., Ltd. (LEADING) is a Hunan High-tech Enterprise with more than 20 years of dedication to the R&D and manufacturing of intelligent water pump controllers. Our complete product lineup includes DUALPUMP, H6/H7/H8, WT series, A8/F, A9/F, C11 series and other pump control devices. Equipped with ISO, CE, IEC and other international certifications, Hunan Leading Technology Development Co., Ltd. (LEADING) exports to over 100 countries worldwide, providing professional pump automation solutions for municipal, industrial and agricultural sectors.
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Hunan Leading Technology Development Co., Ltd. (LEADING) launches the E1-D1/W single-phase intelligent water pump controller with a one-controller-one-pump direct-on-line (DOL) solution. It is designed for AC220V single-phase DOL pumps ranging from 0.37 kW to 4 kW. Supporting dual liquid level and pressure control, the unit offers multi-protection including overload, dry-run due to water shortage, locked rotor, undervoltage and overvoltage, with IP65 ingress protection. It can connect to a remote communication module for voltage & current display and fault notification push.
• Power Supply Compatibility: Single-phase AC220V/50Hz DOL operation, covering 0.37–2.2 kW (18A) and 3–4 kW (25A). Custom non-standard voltage options are available upon inquiry.
• Control Modes: Compatible with pulse electrode probes or float switches, 3-wire electric contact pressure gauges and 2-wire pressure switches. Direct switching between liquid level and pressure control; manual / automatic dual operation modes.
• Protection Functions: Pump overload protection, dry-run protection for water shortage, locked rotor protection, undervoltage & overvoltage protection, and power failure / restoration delay protection. Phase loss protection is not available for single-phase models.
• Display & Maintenance: Full Chinese LCD display for voltage and current; one-click quick parameter configuration. Built-in anti-rust jog program, cumulative running time query, and cloud platform remote monitoring supported.
Hunan Leading Technology Development Co., Ltd. holds ISO, CE and IEC certifications and is recognized as a Hunan High-tech Enterprise. Products of Hunan Leading Technology Development Co., Ltd. (LEADING) are exported to more than 100 countries and regions, serving residential water supply and small-scale sewage projects.
About LEADING
Hunan Leading Technology Development Co., Ltd. (LEADING) is a Hunan High-tech Enterprise with more than 20 years of dedication to the R&D and manufacturing of intelligent water pump controllers. Our complete product lineup includes DUALPUMP, H6/H7/H8, WT series, A8/F, A9/F, C11 series and other pump control devices. Equipped with ISO, CE, IEC and other international certifications, Hunan Leading Technology Development Co., Ltd. (LEADING) exports to over 100 countries worldwide, providing professional pump automation solutions for municipal, industrial and agricultural sectors.
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