ABB YU-1SDA038314R1 Product Description

Overview

ABB YU-1SDA038314R1 is an undervoltage release manufactured by ABB SACE, 1SDA038314R1 is the complete part number of this accessory. The ABB YU-1SDA038314R1 is rated 380/400V AC/DC, designed for E1, E2, E3, E4, E6 and T8 series circuit breakers, it will trip the breaker automatically when the control voltage drops below the preset threshold. This YU-1SDA038314R1 undervoltage release serves as a reliable ABB SACE YU undervoltage release accessory, widely used for low voltage power distribution protection in industrial switchgear panels of the ABB SACE YU undervoltage release accessory.

Features

This ABB YU-1SDA038314R1 is a built-in plug-in accessory for compatible ABB SACE breakers for the ABB SACE YU undervoltage release accessory. It requires continuous energization to maintain the breaker closed state; loss or severe drop of control voltage triggers immediate breaker opening. It adopts robust coil insulation structure and stable electromagnetic holding performance. It can be paired with optional delay units to avoid nuisance tripping caused by transient voltage dip. The ABB YU-1SDA038314R1 is easy to install and replace, and works with other breaker accessories including YO, YC and auxiliary contact blocks. It adapts to heavy industrial power distribution environments requiring reliable power loss protection of the YU-1SDA038314R1 undervoltage release.

Specs

The ABB YU-1SDA038314R1 series: YU undervoltage release. Rated control voltage: 380/400V AC/DC. Compatible breaker: E1, E2, E3, E4, E6, T8. Mounting: internal breaker accessory. Function: undervoltage and power loss trip protection. The ABB YU-1SDA038314R1 complies with IEC 60947-2 and CE standards as a YU-1SDA038314R1 undervoltage release.

Principle

ABB YU-1SDA038314R1 operates based on electromagnetic holding principle. When the 380/400V control voltage is normal, the coil generates magnetic force to hold the internal trip latch and keep the breaker closed. The ABB YU-1SDA038314R1 loses magnetic holding force when voltage falls below the release threshold, and the spring mechanism releases the latch to open the main contacts. The breaker cannot be closed again until the control voltage recovers to normal range. The electromagnetic holding structure of the ABB SACE YU undervoltage release accessory realizes reliable undervoltage and power failure protection.

Applications

This ABB YU-1SDA038314R1 is widely used in industrial main switch rooms, generator control panels, data centre power distribution and marine low voltage systems. It is applied for load and generator protection against voltage collapse and power interruption. It is used for spare replacement and retrofit of legacy ABB SACE Emax and T8 breaker installations. The ABB YU-1SDA038314R1 delivers dependable undervoltage protection for low voltage circuit breakers as a proven YU-1SDA038314R1 undervoltage release.