In Tokyo, we are supporting the installation of earthquake-sensitive circuit breakers ^[Note] in each household to prevent electrical fires during earthquakes. To raise awareness of earthquake-sensitive circuit breakers among a wider audience and encourage their installation, we have decided to select an easy-to-understand name.
The name will be decided by vote from three options selected based on ideas from Tokyo Metropolitan Government employees working on disaster prevention, taking into account expert opinions. Please participate in the selection process to choose a name that will help more people learn about earthquake-sensitive circuit breakers!

[Note] Earthquake-sensitive circuit breaker: Detects tremors of magnitude 5 or higher and cuts off electricity to the building, protecting Tokyo residents from fires caused by electricity.
（What is an earthquake-sensitive circuit breaker?）

Voting period

From Friday, April 3rd, 2026 to Friday, May 15th, 2026

Voting target

Anyone can vote.

How to vote

Vote via the Tokyo app or a dedicated form (includes a survey).
Please see our website or the attached document (PDF: 3,377KB) for further details.

Selection method

The most popular suggestion will be adopted as the name for the earthquake-sensitive circuit breaker, and will be used in future public relations efforts.

Naming candidates

（1）Grapita Switch

This is a friendly way of describing the role of shutting off the electricity abruptly when there is a strong earthquake.

（2）Electric fire stopper

This clearly illustrates the role of preventing electrical fires caused by earthquakes.

（3）Fire Zero Breaker

This product embodies the wish for “zero electrical fires caused by earthquakes,” which is the primary goal of earthquake-sensitive circuit breakers.

This project is an initiative to promote the “Tokyo 2050 Strategy.”
Strategy 22: Disaster prevention: “Promoting actions to protect one’s own life”

Contact: Disaster Prevention Strategy Division, General Affairs Bureau Phone: 03-5320-7449