EATON WL-35717F (WL35717F) Vacuum Interrupter

Overview

The EATON WL-35717F, also referenced as WL35717F, is a high-quality vacuum interrupter bottle designed for use in medium-voltage circuit breakers and contactors. Vacuum interrupters are the core components that provide circuit interruption by containing and extinguishing the electrical arc within a sealed vacuum chamber. This technology offers superior performance compared to air or oil interrupters, with faster arc extinction and minimal contact erosion.

Key Features

• Vacuum interruption technology for reliable arc quenching at current zero

• Long electrical life with minimal contact wear due to vacuum environment

• High dielectric strength in a compact form factor

• Maintenance-free operation with sealed-for-life construction

• Environmentally friendly with no oil or SF6 gas required

• Suitable for frequent switching operations

• Factory-tested for vacuum integrity and contact resistance

Technical Specifications

• Voltage Class: Medium voltage (typically 5-15kV class, verify per specific breaker rating)

• Continuous Current Rating: As specified for the application (verify per breaker requirements)

• Short-Circuit Interrupting Capacity: Designed to meet ANSI/IEEE and IEC standards

• Contact Material: Chromium-copper or similar vacuum interrupter alloy

• Operating Mechanism: Suitable for spring or magnetic actuation

• Mounting: Designed for specific breaker pole assembly

Applications

The WL-35717F vacuum interrupter is used as a replacement component in Eaton medium-voltage circuit breakers, including types such as VCP-W, VCP-T, and other vacuum breaker families. It is also applicable in medium-voltage contactors for motor control centers. These interrupters are essential for power distribution in industrial plants, commercial buildings, and utility substations where reliable overcurrent protection is required.

Replacement and Handling

Vacuum interrupters are precision devices that require careful handling during installation. Proper contact alignment, stroke adjustment, and pressure verification are essential for correct breaker operation. It is recommended that replacement be performed by qualified technicians following Eaton's published procedures for the specific breaker type. Vacuum integrity should be verified before installation, and the interrupter should be protected from mechanical shock and contamination.

Quality and Reliability

Eaton vacuum interrupters are manufactured to stringent quality standards, with each unit undergoing hipot testing, contact resistance measurement, and vacuum integrity verification before shipment. They are designed to provide decades of reliable service in normal operating conditions.