Brand: Terasaki

Exact Model: AT25

MPN: AT25

Type: Air Circuit Breaker (ACB)

Controller Platform: AOR-1BS-AS Over-Current Trip Relay

Input Voltage: 660 VAC

Output Voltage: 660 VAC

Current Rating: 2500A

Power (AC/DC): AC (50/60Hz)

Country of Origin: Japan

Features:

• Equipped with Terasaki AOR-1BS-AS solid-state over-current trip device featuring adjustable Long Time Delay (LTD), Short Time Delay (STD), and Instantaneous/MCR settings.

• Includes integrated AUT-1BDR Under-Voltage Trip (UVT) device rated for AC 200-240V operating voltage.

• High breaking capacity rated up to 65kA at 220-500V AC and 45kA at 660V AC for robust fault protection.

• Engineered for heavy-duty industrial power distribution and demanding marine electrical switchboard control systems.

Mounting: Draw-out type chassis mounting with mechanical interlock and release lever mechanism

Number of Poles: 3

Rated Frequency: 50/60Hz

Standard Compliance: IEC 157-1-P-2

Breaking Capacity (660V AC): 45kA

Breaking Capacity (550-600V AC): 50kA

Breaking Capacity (220-500V AC with INST): 65kA

Short-Time Current Rating: 50kA (1 second) / 45kA (3 seconds)

UVT Trip Device Model: AUT-1BDR (Voltage: AC 200-240V, Serial: 927D)

Over-Current Trip Model: AOR-1BS-AS (Base Current Io: 2.5A, CT Rating: 2.5/5A, Serial: 11614)

Ambient Temperature Rating: 45°C