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- Moulded Case Circuit Breakers TemBreak2
Moulded Case Circuit Breakers TemBreak2
Moulded Case Circuit Breakers TemBreak2
All products are backed by a 12-month guarantee against defects. Terasaki holds ISO 9001 accreditation for manufacturing and distribution, ensuring quality and reliability. The ordering process is simplified with color-coded sections and order codes, and free technical support and application software are available.
International contact numbers are provided for customer support, ensuring accessibility for global clients.
The TemBreak 2 is marketed as the Ultimate Safety Breaker, with safety features that exceed international standards.
TemBreak 2 Moulded Case Circuit Breakers (MCCBs) offer rated currents from 20A to 630A and breaking capacities from 25kA to 200kA at 415V AC. TemBreak 2 Mini MCCBs have rated currents from 10A to 100A with a breaking capacity of 10kA at 415V AC. TemBreak MCCBs range from 630A to 1600A with breaking capacities from 50kA to 125kA at 415V AC.
Features include field-installable accessories, rapid fitting of handles and motor operators, safety locks, advanced LCD displays, customizable tripping times, and visual safety indicators.
TemBreak 2 products exceed recognized safety standards and comply with international standards such as IEC 60947-2 and IEC 60947-3. Independent testing and marine approvals confirm product reliability.
Products have a long life cycle with at least 30,000 mechanical operations, use eco-friendly materials, and have a modular design for easy disassembly and recycling. An ISO 14001 accredited Environmental Management System is in place.
Specifications for MCCBs and Switch-Disconnectors include nominal current ratings, operational voltage, insulation voltage, impulse withstand voltage, and breaking capacities across different voltage levels.
MCCBs feature direct opening action and toggle operation, with options for door-mounted or breaker-mounted handles. Installation options include front connection, extension bar, cable clamp, rear connection, plug-in, and draw-out configurations.
MCCBs offer adjustable thermal and magnetic protection, with some models featuring microprocessor-based protection. Thermal magnetic protection units are available, offering adjustable characteristics for installations with harmonic distortion and DC circuits.
Electronic protection units offer overload, delayed short-circuit, and instantaneous protection, customizable to specific application conditions.
Optional features include ground fault trip and neutral protection, safety locks for plug-in versions, and enhanced electronic breakers with LCD for monitoring and data transmission.
Neutral protection trips the MCCB after a time delay if the current in the neutral conductor exceeds the rated current. The preferential trip alarm activates an LED and a volt-free output contact after a time delay if the load current exceeds a preset threshold.
Specifications include rated current for output contacts and OCR power supply specifications, with the OCR power supply operating at 200-240V AC.
Optional functions for MCCBs must be specified at the time of order and are indicated by a code after the type designation.
MCCBs feature adjustment dials for setting the rated current and selecting preset characteristics, with specified tolerances for various characteristics.
The enhanced electronic breaker with LCD monitors and displays current, voltage, power, energy, and power factor, using the Modbus protocol for data transmission.
Settings for protective functions include long time-delay trip, short time-delay trip, instantaneous trip, ground fault trip, and N-phase protection.
Graphs illustrate tripping times for various protection functions, showing the relationship between tripping time and rated current or CT rated primary current.
Details on let-through peak current and energy characteristics for various circuit breakers, indicating performance under fault conditions.
Discrimination ensures only the protective device immediately upstream of a fault clears it, maintaining system availability. Cascading uses the current limiting capability of upstream breakers to allow the use of lower-rated, cost-effective downstream breakers.
Accessories include terminal blocks, motorized operation, operating handles, insulation accessories, interpole barriers, and dual supply changeover systems.
Specifications for Mini MCCBs and Switch Disconnectors include nominal current ratings, electrical characteristics, installation options, and dimensions.
Instructions for connecting lead wires and mounting dimensions for OCR power supply installations are provided.
References to standards such as IEC 60947-2, EN 60947-2, JIS C 8201-2-1, AS/NZS 3947-2, and NEMA-AB1 ensure compliance with international electrical safety and performance standards.
For 400A and 630A frames, it is recommended to use motor operators with link mechanical interlocks and breaker mounted handles.
The document serves as a comprehensive guide for selecting and applying MCCBs in various electrical systems, providing detailed specifications, application data, and accessory options to ensure optimal performance and safety.
Catalog excerpts
The Ultimate Safety Breaker
Open the catalog to page 1
page 1 The Ultimate Safety Breaker OUR CUSTOMER CARE COMMITMENTS CUSTOMER SERVICE CONTACT DETAILS Quality is Guaranteed All products supplied from this catalogue carry a guarantee against defects in materials and workmanship for a period of 12 months from date of purchase as standard. Quality is Accredited Terasaki has ISO 9001 accreditation for the manufacture, sale and distribution of all products featured in this catalogue. Ordering is Easy We have made ordering easy for you by colour coding the sections of this catalogue and including order codes. If you need help with ordering or selection,...
Open the catalog to page 2
Safety and protection are the prime purposes of Terasaki products. You care about safety and protection. The users of products you specify care about safety and protection. We call TemBreak 2 the Ultimate Safety Breaker. Throughout this catalogue you will see our Safety+ mark. This is designed to draw your attention to safety features which exceed international standards. Please read further to discover the benefits of TemBreak 2.
Open the catalog to page 3
page 3 The Ultimate Safety Breaker THE TEMBREAK 2 PRODUCT LINES TEMBREAK 2 MOULDED CASE CIRCUIT BREAKERS Rated current (In) from 20A to 630A. Breaking Capacity (Icu) from 25kA to 200kA at 415V AC. TEMBREAK 2 MINI MOULDED CASE CIRCUIT BREAKERS Rated current (In) from 10A to 100A. Breaking Capacity (Icu) of 10kA at 415V AC. TEMBREAK MOULDED CASE CIRCUIT BREAKERS Rated current (In) from 630A to 1600A. Breaking Capacity (Icu) from 50kA to 125kA at 415V AC.
Open the catalog to page 4
The Ultimate Safety Breaker page 4 SECTION 1 WELCOME TO TEMBREAK 2 TEMBREAK 2 MOULDED CASE CIRCUIT BREAKERS 16A TO 630A 1. Welcome to TemBreak 2 • Easy Selection Guide 5 • 10 Reasons to use TemBreak 2 7 • Safety Plus 9 • Exceeding Standards 11 • Reducing Environmental Impact 12 2. Ratings and Specifications 3. Operating Characteristics 4. Application Data 5. Accessories 6. Installation 7. Dimensions TEMBREAK MOULDED CASE CIRCUIT BREAKERS 630A TO 1600A 9. TemBreak Moulded Case Circuit Breakers TEMBREAK 2 MINI MOULDED CASE CIRCUIT BREAKERS 10A TO 100A 8. TemBreak 2 MINI Moulded Case Circuit Breakers...
Open the catalog to page 5
page 5 The Ultimate Safety Breaker SECTION 1 The TemBreak 2 range of products includes: - Moulded Case Circuit Breakers (MCCBs) - Switch-Disconnectors in the same compact moulded case frame sizes as MCCBs - A comprehensive range of accessories which are common to MCCBs and Switch-Disconnectors. All internal accessories are common to all frame sizes. F J Adjustable thermal, adjustable magnetic E Electronic protection N No protection S 125 G J E Economical S Standard H High L Limiting* Frame rating, In (A) C Low breaking capacity N Medium breaking capacity G High breaking capacity Fixed thermal,...
Open the catalog to page 6
The Ultimate Safety Breaker page 6 SECTION 1 E L H S Note: All breaking capacities are r.m.s. symmetrical at 415V AC 125 S125 NN 160/250 400/630 800/1250/1600 S160 NN S250 NN Model Type Model Type S400 NN S630 NN Model Type 50/100 MCCBs Frame Rating (A) TemBreak Moulded Case Circuit Breakers. Refer to Section 9 TemBreak 2 Mini Moulded Case Circuit Breakers. Refer to Section 8 In (A) Switch-Disconnectors 125 16 250 100 16 10 630 250 1600 630 E400 NJ 25 E630 NE 36 S400 CJ 36 S400 NJ 50 S400 NE 50 S400 GJ 70 S400 GE 70 S400 PJ 85 S400 PE 85 S630 CE 50 S630 GE 70 H400 NE 125 L400 NE 200 Model Type...
Open the catalog to page 7
page 7 The Ultimate Safety Breaker SECTION 1 • Accessories can be fitted by the switchboard builder or added by the end-user. All internal accessories are common for TemBreak 2 MCCBs. • Handles and motor operators can be rapidly fitted using the locking pegs. It takes less than 10 seconds to secure a handle or motor to the MCCB – a great time saving compared to alternative products. • All accessories are endurance tested to the same level as the host MCCB. 10 REASONS TO USE TEMBREAK 2 1. FIELD-INSTALLABLE ACCESSORIES The plug-in MCCB is locked to the base when the toggle is ON. It cannot be removed...
Open the catalog to page 8
The Ultimate Safety Breaker page 8 SECTION 1 10 REASONS TO USE TEMBREAK 2 The mechanical interlock is installed on the front of the MCCB, and is compatible with motor operators and handles. An automatic changeover system can be assembled in a few minutes by a switchboard builder or end-user. 6. COMPACT CHANGEOVERS Under the heading “Measures to minimise the risk in the event of failure”, IEC 60204-1 Safety of Machinery-Electrical Equipment of Machinery includes the following recommendation: “-the use of switching devices having positive (or direct) opening operation.” 7. DIRECT OPENING If you...
Open the catalog to page 9
WELCOME TO TEMBREAK 2 SAFETY PLUS Terasaki have an innovative approach to product design. Our goal is to develop products which not only meet, but exceed recognised standards. We use our knowledge of related applications to improve circuit breaker designs. For instance, when developing the Direct Opening Action, we applied ideas from a machinery safety standard to the design of the TemBreak 2 switching mechanism. This proactive development policy confirms our reputation as Innovators in Protection Technology. Machine Safety TemBreak 2 MCCBs are marked with IEC symbol indicating Direct Opening...
Open the catalog to page 10
WELCOME TO TEMBREAK 2 You can easily see if a breaker is open, closed or tripped. SAFETY+ coloured indicators boldly display the ON or OFF status. The indicators are fully covered if a breaker trips, and black is the only visible colour. This is a unique safety feature. You can identify faulty circuits at a glance. The toggle position always matches the position of the main contacts. ON (I) OFF (O) TRIPPED The risk of touching live parts has been minimised by design. These features reduce the risk of touching live parts: • There are no exposed metal screws on the front face • IP20 protection...
Open the catalog to page 11
page 11 The Ultimate Safety Breaker SECTION 1 Safety Plus TemBreak 2 MCCBs exceed the requirements of recognised standards. International Compliance • The TemBreak 2 MCCB complies with the international standard IEC 60947-2 • TemBreak 2 Switch Disconnectors comply with IEC 60947-3 • Accessories comply with IEC 60947-5-1 or IEC 61058-1 • The entire range conforms to the IEC general rules for switchgear, IEC 60947-1 • TemBreak 2 MCCBs comply with JIS C 8201-2-1 Ann.1 • The TemBreak 2 range complies with the EC Low Voltage Directive and all models are CE marked • TemBreak 2 MCCBs carry the IEC symbol...
Open the catalog to page 12All Terasaki Electric Ltd catalogs and technical brochures
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