Introduction
Terasaki Electric Co., Ltd., founded in 1923, is a prominent manufacturer of circuit breakers, known for its innovative solutions worldwide. The company introduced its first breaker in Japan in 1947 and is recognized for the TemBreak and TemPower series, which are acclaimed for their reliability and performance.

Certifications and Standards
Terasaki holds ISO9001 and ISO14001 certifications, ensuring adherence to quality management and environmental standards. Their products comply with international standards such as IEC 60947-2 and BS EN 60947, and are endorsed by organizations like ASTA, Lloyd’s Register, and Bureau Veritas.

Product Overview

• TemPower Series: Air circuit breakers with advanced communication features, ideal for high-performance applications.
• TemBreak Series: Moulded case circuit breakers available in various models for different requirements, including economical, standard, high-fault level, and motor protection series.
• Additional Products: Earth-leakage relays, power monitoring equipment, and specialized circuit breakers for specific applications.

Technical Specifications
The catalogue details specifications for each product series, including rated current, voltage, breaking capacity, and operational life. Air circuit breakers are designed for high fault conditions, offering robust performance metrics.

Global Presence
Terasaki has an extensive international network with affiliates in Europe, Asia, and the Americas, ensuring global product availability and support.

Conclusion
Terasaki remains committed to innovation and expanding its product range to meet global market demands, with a focus on quality and environmental sustainability.

Specifications
The document specifies a 3-pole breaker with the center pole omitted, detailing rated current at 45°C, rated impulse withstand voltage, and rated insulation voltage. AC and DC rated breaking capacities are provided for various voltages, in compliance with standards like IEC 60947-2 and NEMA AB-1.

Dimensions and Weight
Dimensions are given in millimeters for parameters a, b, c, and d, along with weight in kilograms.

Connections and Mountings
Details on connection types include front terminal screw connect, rear bolt stud connect, and plug-in options for switchboards and distribution boards.

Protective Functions
The breaker includes adjustable thermal and fixed magnetic trips, as well as adjustable thermal and magnetic trips.

Standard Features
Features include on/off color indication and a trip button.

Accessories
Optional accessories include auxiliary switches, alarm switches, shunt trips, undervoltage trips, motor operators, and various mounting and handle options.

Approvals and Breaking Capacities
Approvals and applicable breaking capacities to marine standards are listed, detailing breaker types, rated currents, and voltages.

Earth Leakage Relays
Specifications include rated control voltage, sensitivity current, operating time, and mounting options.

Power Monitoring Equipment
TemMeasure allows for power consumption monitoring for energy saving, featuring measurements of current, voltage, power, and power factor.

Direct Bus Plug-in Mounting Base
TemPlug offers a direct plug-in solution for main buses, facilitating downsizing, standardization, and flexibility in switchboard manufacturing.

Phase Standardization
The document specifies standardization of load-side phases to R, S, and T from the top, regardless of the breaker's mounting orientation.

Safety Improvements
TemPlug enhances switchboard safety by separating bus and breaker sections, applicable for circuit breakers ranging from 100A to 630A.

Specifications
Detailed specifications for various circuit breakers are provided, including frame sizes, applicable circuit breakers, and dimensions. A table outlines frame sizes from 100A to 630A and the dimensions and applicable circuit breakers for each size.

Standard Features and Accessories
Standard features include contact position indicators and IP 20 terminal protection. Accessories include shunt trips, auxiliary contacts, terminal covers, and padlock devices.

Breaker Types
Different breaker types are described, including those with magnetic trips only, high-INST trip breakers, and low-INST trip breakers. Special environment breakers are mentioned for non-standard operating conditions.

Operating Conditions
Standard operating conditions are specified, including ambient temperature, relative humidity, altitude, and atmospheric conditions. Special considerations are given for low-temperature, anti-fungus, and highly anti-corrosive circuit breakers.

Contact Information
Contact details for Terasaki's offices in various countries, including the UK, Italy, Spain, Sweden, Singapore, Malaysia, Brazil, China, and Japan, are provided.