Busch-Jaeger Power Supply with Battery Backup 1519 U (2TKA00004530)

In residential and commercial smart-building installations, the Busch-Jaeger Power Supply with Battery Backup 1519 U provides uninterrupted 24 V DC power for Busch-free@home and Busch-Welcome system components. It is installed on a DIN rail in the distribution board, where its integrated NiMH battery maintains operation during brief mains interruptions.

Key specifications

• Input voltage: 230 V AC, 50/60 Hz
• Output voltage: 24 V DC
• Continuous output current: 0.8 A
• Short-term output current: 1.2 A
• Output power: 19.2 W
• Integrated NiMH battery, 1.2 Ah
• DIN rail mounting, 4 modules wide
• Protection class: IP20
• Operating temperature: -5 °C to +45 °C
• Short-circuit proof, overload proof, deep discharge protection
• LED status indication for operation and battery

Why choose it

The integrated battery backup ensures that connected bus devices continue to communicate and execute commands during short power failures, avoiding system resets and loss of state. The compact 4-module DIN rail housing fits standard distribution boards, and the unit is short-circuit and overload proof, with deep discharge protection to extend battery life.

Ideal use cases

• Powering Busch-free@home system devices in residential automation
• Supplying Busch-Welcome door communication components
• Maintaining bus voltage during brief mains interruptions
• Use in distribution boards where a reliable 24 V DC source with backup is required

Good to know

The unit operates from a standard 230 V AC mains supply and delivers a regulated 24 V DC output. It is designed for indoor use only (IP20) and should be installed in a dry, protected environment. The LED indicators show both normal operation and battery status, simplifying commissioning and maintenance.