Grothe Bell Transformer GT 3173 S 4-12V 2/1.5A with Mains Switch (14083)

Installers and electricians working on doorbell systems will appreciate the Grothe GT 3173 S bell transformer, which provides selectable low-voltage outputs and a built-in mains switch for convenient isolation during maintenance. The unit mounts on a DIN rail and delivers reliable power for bells, chimes, and other signaling devices.

Key specifications

• Input voltage: 230V AC, 50/60 Hz
• Output voltages: 4V, 8V, 12V AC
• Maximum output current: 2A (4V/8V), 1.5A (12V)
• Apparent power: 18 VA
• Integrated mains switch
• DIN rail mounting, 2 modules wide
• Short-circuit proof and overload protected
• Protection class: IP20
• Operating temperature: -5°C to +40°C
• Housing material: thermoplastic
• Connection: screw terminals

Why choose it

This safety isolating transformer meets VDE and EN 61558 standards, ensuring safe operation for low-voltage doorbell circuits. The selectable output voltages allow flexibility for different chime requirements, while the integrated switch simplifies servicing.

Ideal use cases

• Powering residential doorbells and chimes
• Commercial signaling and bell systems
• DIN rail installations in distribution boards

Good to know

The transformer is designed for dry indoor environments (IP20) and should be installed by a qualified electrician. It is short-circuit proof, providing additional safety in case of wiring faults.