Siemens 3WL9111-0AE14-0AA0 Undervoltage Release

Core Performance & Industrial Application

The Siemens 3WL9111-0AE14-0AA0 is a time-delay undervoltage release accessory for SENTRON 3WL air circuit breakers.

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

Equipped with adjustable delay function to prevent nuisance tripping caused by short-term voltage dips and grid transient fluctuations.

It adopts modular plug-in design and can be installed inside the 3WL air circuit breaker conveniently.

It is widely matched with standby power switching systems to improve the stability of low-voltage power distribution.

It is commonly used as spare replacement for main incoming cabinets and medium-large power distribution switchgear.

Technical Specifications

▶ Product type: Time-delay undervoltage release

▶ Brand: Siemens

▶ Model: 3WL9111-0AE14-0AA0

▶ Compatible breaker: SENTRON 3WL air circuit breaker

▶ Rated voltage: 380-415 V AC 50/60Hz

▶ Adjustable delay range: 200 ms ~ 3200 ms

▶ Mounting: Internal assembly on 3WL breaker

▶ Operating temperature: -25℃ ~ +70℃

▶ Protection rating: IP20 inside switchgear

▶ Feature: Anti transient voltage dip, adjustable delayed trip, modular structure

▶ Country of origin: Czech Republic

▶ Compliance: CE certification

Industry Applications

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

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