Disclosed is a relay. The relay includes a first fixed contact, a second fixed, a movable contact, and a first magnet and a second magnet. The first contact part is disposed at a position which is closer to a distance to the second magnet than a distance to the first magnet, and the second contact part is disposed at a position which is closer to the distance to the first magnet than the distance to the second magnet. Accordingly, arcs are prevented from gathering at one position, and a contacting force between the movable contact and the fixed contacts is prevented from being reduced.

A fluid level detection device comprising an elongated shaft having a plurality of sensors and associated switches on a distal end thereof. The distal end of the shaft extends into a liquid reservoir with the switches configured to detect multiple predetermined fluid levels. The first fluid level detected is a warning level indicating that the level of fluid in the reservoir is low and results in a warning indication. The second fluid level detected is for a shutoff threshold that results in shutdown of the device using the fluid in the reservoir and a shutdown indicator.

A disconnect device includes a cooling device having first and second main surfaces opposite to each other, a first insulator contacting the first main surface, a second insulator contacting the second main surface, a charging relay and a first discharging relay which contact a surface of the first insulator opposite to a surface of the first insulator contacting the first insulator, a protector contacting a surface of the second insulator opposite to a surface of the second insulator contacting the second main surface, a first power storage terminal configured to be connected to a first electrode of the power storage element, a second power storage terminal configured to be connected to a second electrode of the power storage element. The charging relay is separated from the discharging relay via a space between the charging relay and the discharging relay. At least a part of the protector faces the space across the first insulator, the cooling device, and the second insulator.

A disconnect device includes a cooling device having first and second main surfaces opposite to each other, a first insulator contacting the first main surface, a second insulator contacting the second main surface, a charging relay and a first discharging relay which contact a surface of the first insulator opposite to a surface of the first insulator contacting the first insulator, a protector contacting a surface of the second insulator opposite to a surface of the second insulator contacting the second main surface, a first power storage terminal configured to be connected to a first electrode of the power storage element, a second power storage terminal configured to be connected to a second electrode of the power storage element. The charging relay is separated from the discharging relay via a space between the charging relay and the discharging relay. At least a part of the protector faces the space across the first insulator, the cooling device, and the second insulator.

A high current switch, in particular for a motor vehicle, having a first bus bar, a second bus bar in addition to a first semi-conductor switch that has a control connection and a first transmission connection as well as a second transmission connection. The first transmission connection is placed in direct contact with the first bus bar and the second transmission connection is placed in direct electric contact with the second bus bar.

Synchronized mechanical switches are configured to support electrical switching circuits operating at frequencies equal to or higher than the frequency of the primary AC power supply. Due to near perfect impedances of mechanical switches as well as accurate timing control mechanisms, the mechanical switching circuits provide timely electrical connections to the terminals of the primary AC power supply to generate proper waveforms suitable to power next stage electrical circuits without the need to use semiconductor devices.

Synchronized mechanical switches are configured to support electrical switching circuits operating at frequencies equal to or higher than the frequency of the primary AC power supply. Due to near perfect impedances of mechanical switches as well as accurate timing control mechanisms, the mechanical switching circuits provide timely electrical connections to the terminals of the primary AC power supply to generate proper waveforms suitable to power next stage electrical circuits without the need to use semiconductor devices.

A disconnect device includes a heatsink, a substrate, a first charging relay disposed on a first heat transfer part, a second charging relay disposed on a second heat transfer part, a first discharging relay disposed on a third heat transfer part, a second discharging relay disposed on a fourth heat transfer part, and first and second power storage ends. The first and second discharging relays are disposed closer to the first and second power storage ends than the first and second charging relays are. The first, second, third, and fifth heat transfer parts are aligned in a first direction. The fourth and fifth heat transfer parts are aligned in a second direction perpendicular to the first direction. A heat dissipating performance of the heatsink on the third, fourth, and fifth heat transfer parts is higher than a heat dissipating performance of the heatsink on the first and second heat transfer parts.

A disconnect device includes a heatsink, a substrate, a first charging relay disposed on a first heat transfer part, a second charging relay disposed on a second heat transfer part, a first discharging relay disposed on a third heat transfer part, a second discharging relay disposed on a fourth heat transfer part, and first and second power storage ends. The first and second discharging relays are disposed closer to the first and second power storage ends than the first and second charging relays are. The first, second, third, and fifth heat transfer parts are aligned in a first direction. The fourth and fifth heat transfer parts are aligned in a second direction perpendicular to the first direction. A heat dissipating performance of the heatsink on the third, fourth, and fifth heat transfer parts is higher than a heat dissipating performance of the heatsink on the first and second heat transfer parts.