Are doorbells in homes connected with the circuit breakers Jul 01, 2007No they are not connected directly to your breaker box but doorbells run off low voltage if you locate the transformer for your doorbell you can check to see if it has 110v power supply to it if it.. How to Fix a Broken Hard-Wired Doorbell - dummies Although doorbells don’t emit much voltage, the transformer is connected to a 120-volt wire in the house. Turn off the power before you start working on the doorbell. When the bell doesn’t ring, look at the circuit breaker or fuse box. If it hasn’t tripped, turn off power to the doorbell. Anyone install a Ring Pro directly to a transformer Dec 24, 2016I’m also attempting to connect Ring Pro directly to the door bell transformer without an existing mechanical doorbell. Based on my research, the square enclosed Power Kit (also known as the Night Vision Kit) is different than what is actually required, ie. the connector with the fuse casing, known as the Pro Power Cable which is not included in the box of your purchase.