Siemens 3WL9111-0AE13-0AA0 Undervoltage Release

Core Performance & Industrial Application

The Siemens 3WL9111-0AE13-0AA0 is a time-delay undervoltage release accessory designed for SENTRON 3WL air circuit breakers.

It monitors the control supply voltage of the circuit breaker and triggers tripping when voltage drops below the threshold.

Built-in delay function avoids false tripping caused by instantaneous voltage dip or transient fluctuation on power grid.

It is installed internally inside the 3WL air circuit breaker as a modular accessory.

It supports stable coordination with backup power switching scheme for industrial power distribution system.

It is widely used for substation and factory main incoming cabinet maintenance and spare replacement.

Technical Specifications

▶ Product type: Time-delay undervoltage release

▶ Brand: Siemens

▶ Model: 3WL9111-0AE13-0AA0

▶ Compatible breaker: SENTRON 3WL air circuit breaker

▶ Rated voltage: 208-240 V AC 50/60Hz, 220-250 V DC

▶ Function: Voltage loss protection with adjustable time delay

▶ Mounting: Internal assembly on 3WL breaker

▶ Operating temperature: -25℃ ~ +70℃

▶ Protection rating: IP20 inside switchgear

▶ Feature: Anti-transient dip, delayed trip, modular plug-in design

▶ Country of origin: Czech Republic

▶ Compliance: CE certification

Industry Applications

Applied in industrial main incoming switchgear, power substations and data center low voltage distribution cabinets.

Note: Confirm matching 3WL frame size and voltage grade before ordering