Molded-case circuit breaker for DC
First Claim
1. A molded-case circuit breaker for DC that contains a plurality of interruption units within an outer casing, the DC circuit breaker comprising a two-unit connecting heater that connects fixed contacts of adjacent interruption units, the two-unit connecting heater being placed within the outer casing,wherein the adjacent interruption units are connected to each other as a series circuit,wherein the two-unit connecting heater is formed in a U-shape, and comprises:
- a pair of head portions respectively connected to the fixed contacts of the adjacent interruption units;
a pair of body portions extending downward from the head portions; and
a leg portion connecting the pair of body portions, andwherein one of the pair of body portions has a tripping mechanism that detects an over-current in a circuit and interrupts the circuit,wherein a trip portion case for receiving the two-unit connecting heater and the tripping mechanism is placed within the outer casing, andwherein the trip portion case has a partition for insulation between the interruption units, and a cut groove is formed on a part of the partition to insert the leg portion.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a molded-case circuit breaker for direct current (DC), and more particularly, to a molded-case circuit breaker for DC that contains an internal connecting conductor connecting adjacent terminals to improve insulation performance and assemblability and reduce occupied space. There is provided a molded-case circuit breaker for DC that contains a plurality of interruption units within an outer casing, the DC circuit breaker including a two-unit connecting heater that connects fixed contacts of adjacent interruption units, the two-unit connecting heater being placed within the outer casing.
18 Citations
11 Claims
-
1. A molded-case circuit breaker for DC that contains a plurality of interruption units within an outer casing, the DC circuit breaker comprising a two-unit connecting heater that connects fixed contacts of adjacent interruption units, the two-unit connecting heater being placed within the outer casing,
wherein the adjacent interruption units are connected to each other as a series circuit, wherein the two-unit connecting heater is formed in a U-shape, and comprises: -
a pair of head portions respectively connected to the fixed contacts of the adjacent interruption units; a pair of body portions extending downward from the head portions; and a leg portion connecting the pair of body portions, and wherein one of the pair of body portions has a tripping mechanism that detects an over-current in a circuit and interrupts the circuit, wherein a trip portion case for receiving the two-unit connecting heater and the tripping mechanism is placed within the outer casing, and wherein the trip portion case has a partition for insulation between the interruption units, and a cut groove is formed on a part of the partition to insert the leg portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification