Description

ABB YU‑1SDA038306R1 Under‑Voltage Release

Technical Specifications

• Product Model: YU‑1SDA038306R1
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 V DC rated operating coil voltage
• Operating Temperature: ‑25 °C ~ +70 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Trip actuation ≤100 ms
• Protection Class: IP20 accessory component
• Accuracy Class: Not applicable
• Output Frequency: Not applicable
• Rated Current: Low‑power coil consumption
• Function: Under‑voltage trip accessory for ABB circuit‑breaker
• Compatibility: Compatible with ABB SACE Tmax series circuit‑breakers
• Mounting: Internal circuit‑breaker accessory installation
• Certifications: CE, IEC standard compliant
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.12 kg
• Dimensions: Standard breaker accessory footprint
• 

Product Overview

YU‑1SDA038306R1 is ABB under‑voltage release accessory for Tmax series molded‑case circuit‑breakers. When control supply voltage drops below threshold value, this accessory triggers circuit‑breaker trip to protect downstream loads from undervoltage damage. It is installed inside circuit‑breaker as an original OEM accessory. Available as new‑old‑stock and refurbished spare parts for power‑distribution cabinet maintenance and breaker retrofitting.

Application Notes

‑ Strictly apply for matched ABB Tmax circuit‑breaker models only. ‑ Verify coil rated voltage matches control‑circuit supply. ‑ Power‑off main circuit before accessory replacement. ‑ Typical deployment: low‑voltage power‑distribution cabinet, MCC spare‑part stocking.