EATON ZE-4 Motor Protection Relay 2.4-4A Class 10A for DILM Contactors

The EATON ZE-4 stands out among motor protection relays by combining precise thermal overload protection with a compact, direct-mounting design tailored for DILM contactors. Unlike generic relays, it offers a narrow current adjustment range of 2.4–4 A, ensuring accurate tripping for motors operating within that band. Its Class 10A trip curve and phase failure sensitivity deliver reliable protection in demanding industrial environments.

Highlights

• Thermal overload relay with adjustable setting range 2.4–4 A
• Direct mounting onto EATON DILM7, DILM9, DILM12, and DILM15 contactors
• Phase failure sensitivity prevents motor damage from single-phasing
• Manual/automatic reset function for flexible operation
• Auxiliary contacts: 1 NO + 1 NC for signaling and control
• High rated operational voltage up to 690 V AC
• Compact IP20 design with screw terminals

In daily use

Installed directly on a compatible contactor, the ZE-4 provides continuous thermal monitoring without extra wiring. When an overload or phase loss occurs, it trips the contactor and signals via auxiliary contacts. The reset can be set to manual for safety or automatic for unattended restart. Its wide temperature tolerance (-25 to +55 °C) and compliance with IEC/EN 60947-4-1 make it suitable for pumps, fans, conveyors, and other three-phase motor applications.

Full specifications

• Product type: Motor protection relay
• Current setting range: 2.4–4 A
• Trip class: 10A
• Number of poles: 3
• Mounting: Direct on contactor
• Compatible contactors: DILM7, DILM9, DILM12, DILM15
• Overload protection: Thermal
• Phase failure sensitivity: Yes
• Reset function: Manual/automatic
• Auxiliary contacts: 1 NO + 1 NC
• Rated operational voltage (Ue): 690 V AC
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Degree of protection: IP20
• Connection: Screw terminals
• Standards: IEC/EN 60947-4-1, VDE 0660
• Ambient operating temperature: -25 to +55 °C

Final note

The EATON ZE-4 is a dependable choice for protecting small three-phase motors where precise current matching and compact integration are essential.