Description
TERASAKI ELECTRIC CO., LTD.
TEMPOWER 2
AR216H
3-POLE AIR CIRCUIT BREAKER
1H2545SAB
POLES: 3
FREQ.: 50/60HZ
UI: 1000V
UIMP: 12KV
MAX.: 1600A
CAT. B
AMB. TEMP.: 45°C
ANN1 ANN2: 40°C
TYPE: AGR-21BL-PS
OVER-CURRENT RELEASE
MADE IN JAPAN
The Terasaki Tempower 2 AR216H is a 3-pole air circuit breaker rated at 1600A maximum current with a 1000V insulation voltage and an impulse withstand voltage of 12kV. Designed for demanding marine electrical environments, this unit incorporates an AGR-21BL-PS over-current release and is rated for ambient temperatures up to 45°C, making it well suited to the thermal conditions found in shipboard switchboards and main distribution panels. As a core component within the Air Circuit Breaker category, it provides reliable overcurrent and short-circuit protection across onboard power distribution systems where continuity and safety are operationally critical.
Key Features
✓ Rated at 1600A maximum with UI 1000V and UIMP 12kV, providing robust insulation and fault-withstand capability for high-capacity marine circuits.
✓ Fitted with AGR-21BL-PS over-current release for automatic protection against overcurrent conditions, with 50/60Hz dual-frequency compatibility supporting international vessel operations.
✓ Category B rated and tested for ambient temperatures up to 45°C, reflecting suitability for engine room and switchboard spaces where thermal loads are elevated.
✓ 3-pole configuration supports standard three-phase marine power distribution installations; exact panel or controller compatibility should be confirmed against vessel-specific switchboard drawings.
✓ Manufactured in Japan by Terasaki Electric Co., Ltd., a recognised supplier of marine-grade electrical protection equipment used across commercial and industrial vessel fleets worldwide.
Marine Applications
✓ Main switchboard and distribution panel protection aboard cargo vessels, tankers, and bulk carriers where high-current feeder circuits require reliable overcurrent isolation.
✓ Feeder circuit protection in engine room power distribution systems on offshore support vessels and platform supply vessels.
✓ Generator output circuit breaker duties on vessels with multiple generating sets requiring coordinated protection across parallel bus arrangements.
✓ Shore power inlet and bus-tie applications on ferries, RoRo vessels, and passenger ships where switchboard integrity is essential to operational safety.
✓ Replacement duty on existing Terasaki Tempower 2 series installations during planned dry-dock overhaul or unscheduled maintenance arising from fault events.
Why Marine Engineers Choose
The Terasaki Tempower 2 AR216H is valued for its high interrupting capacity, dual-frequency rating, and proven performance in the elevated ambient temperatures typical of shipboard electrical spaces, making it a dependable choice for engineers maintaining or upgrading marine main and distribution switchboards.
Ideal For
Cargo ships, bulk carriers, tankers, offshore support vessels, ferries, RoRo vessels, passenger ships, and any commercial vessel requiring high-capacity overcurrent protection within main or secondary switchboard installations.
Technical Support
Technical support is available for this Terasaki Tempower 2 air circuit breaker, covering onboard installation guidance, over-current release adjustment, and remote troubleshooting assistance. Our team can assist marine engineers and electrical officers with queries related to switchboard integration and in-service maintenance requirements.
