- Catalogs
- Terasaki Electric Ltd
- TZS Series Earth Leakage Relays
TZS Series Earth Leakage Relays
TZS Series Earth Leakage Relays
Quality assurance is provided with a 12-month warranty against defects. Terasaki is ISO 9001 accredited for manufacturing and distribution. Ordering is streamlined with color-coded sections and order codes, and free technical support and application software are available.
Contact numbers are available for different regions, including Europe, Asia, and the Americas.
The TemBreak 2 series includes Moulded Case Circuit Breakers (MCCBs) and Mini MCCBs with rated currents from 10A to 1600A and breaking capacities from 10kA to 200kA at 415V AC.
Features include field-installable accessories, a safety lock, symmetrical door cutout patterns, modular sizes, an advanced LCD display, compact changeovers, direct opening, customized tripping times, and visual safety indicators.
TemBreak 2 exceeds international standards like IEC 60947-2 and JIS C 8201-2-1, with features enhancing safety compliance.
Designed for a long life cycle with at least 30,000 mechanical operations, using eco-friendly materials and supporting easy recycling. Accredited to ISO 14001 for environmental management.
Specifications for MCCBs and Switch-Disconnectors include nominal current ratings, operational voltage, insulation voltage, impulse withstand voltage, and breaking capacities. MCCBs are available in various models and frame sizes with adjustable thermal and magnetic characteristics.
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 are designed for high endurance with specified electrical and mechanical cycles. Protection features include adjustable thermal and magnetic settings, microprocessor-based protection, and utilization categories.
TemBreak 2 MCCBs offer thermal magnetic protection with adjustable settings for thermal and magnetic elements, suitable for installations with harmonic distortion and DC circuits.
Available for 250A to 630A frames, offering overload, delayed short-circuit, and instantaneous protection. Optional functions include ground fault trip and neutral protection.
Applications include installations with harmonic distortion and DC circuits, motor and generator protection, emphasizing the need for specially modified protection characteristics.
Neutral protection activates the MCCB after a delay if the neutral conductor current exceeds the rated current. The Preferential Trip Alarm activates an LED and output contact after a delay if the load current exceeds a preset threshold.
Output contact ratings vary by load type and voltage, with specific ratings for resistive and inductive loads.
Optional functions must be specified when ordering, using a code that indicates the combination of functions.
Adjustment dials set the rated current and select preset characteristics. Tolerances for various characteristics like short time delay and instantaneous trip are specified.
The enhanced breaker monitors and displays current, voltage, power, energy, and power factor, using Modbus protocol for data transmission.
Settings for protective functions include rated current, long and short time-delay trips, instantaneous trip, ground fault trip, and phase rotation protection.
Graphs illustrate tripping times for various protection functions, showing the relationship between current and time under different conditions.
Details the let-through peak current characteristics for various circuit breakers across different voltage levels.
Outlines the operating characteristics of the circuit breakers, focusing on safety features and performance metrics.
Introduces the concept of discrimination (selectivity) in circuit breakers, explaining how it ensures that only the protective device closest to a fault operates.
Provide detailed information on the selectivity between upstream and downstream circuit breakers.
Describes a method to use the current limiting capability of upstream breakers to allow the use of lower-rated, cost-effective breakers downstream.
Emphasizes safety, efficiency, and cost-effectiveness in electrical installations.
Discusses the application of MCCBs in both AC and DC systems, highlighting the importance of using thermal elements for DC overload detection.
Provide detailed information on the breaking capacities of various MCCB models at different fault levels.
Outlines the accessories available for TemBreak 2 MCCBs, including electrical control accessories like status and alarm contacts, remote tripping coils, and undervoltage protection coils.
MCCBs offer protection for DC installations up to 1000A for overload and 2500A for short-circuit protection.
Provides detailed technical specifications and descriptions of accessories for MCCBs, focusing on terminal blocks, motor operators, operating handles, locking devices, insulation accessories, and dual supply changeover systems.
Facilitate control wiring for MCCBs, allowing larger cross-sectional area cables.
Enable electrical control of MCCBs, allowing for remote opening and closing.
Allow for manual operation of MCCBs from outside a cubicle, with safety features like door interlocks and padlocking capabilities.
Provide additional insulation and protection against direct contact with live parts.
Prevent simultaneous connection of multiple AC voltage sources.
Prevent both MCCBs from being in the ON position simultaneously.
Monitors AC mains supply and manages the switch to a generator if necessary.
Includes DC supply, relay contacts, dimensions, and temperature ratings.
Offers flexible installation options, including front and rear connections, plug-in systems, and DIN rail mounting.
Details on rated currents and temperature derating for various MCCB models.
Details specifications for various types of Mini MCCBs and Switch Disconnectors.
Instructions for connecting lead wires from the breaker to specific terminals.
References several standards for MCCBs and Switch Disconnectors.
For 400A and 630A frames, it is recommended to use motor operators with wire mechanical interlocks and breaker mounted handles.
Details various electrical control accessories, including auxiliary switches, alarm switches, shunt trips, and undervoltage trips.
Extensive dimensions and mounting details are provided for different types of interlocks and MCCBs.
MCCB types and their dimensions are listed with specific part numbers.
Ensure correct installation of OCR power supply and adherence to maximum lead wire lengths.
Details the specifications of the TemBreak 2 Mini MCCBs, including the use of control cables and tightening torque for terminal screws.
Several accessories are available for the MCCBs, including toggle locks, terminal covers, and mechanical interlocks.
The MCCBs can be mounted on a 35mm DIN rail and allow for rear connections to separate compartments.
Dimensions for various models are provided, with specific measurements for frame sizes, pole numbers, and weights.
Outlines the operating characteristics of the MCCBs, including their exceptional current limiting capabilities.
For installations in environments with rapid temperature changes or corrosive atmospheres, additional treatments are recommended.
Provides detailed technical specifications and installation guidelines for TemBreak MCCBs.
Describes the use of door-mounted operating handles for circuit breakers.
Terminal covers and interpole barriers are discussed as essential components for preventing exposure to live parts.
Toggle extensions and locks are available to enhance manual operation and secure the MCCB.
Various interlock mechanisms are detailed to ensure safe operation.
Outlines methods for connecting large and multiple conductors.
Special treatments for fungus-moisture proofing, low temperature, and anti-corrosion are available.
Detailed dimensions for various MCCB models and accessories are provided.
Concludes with contact details for Terasaki Electric Co., Ltd. and its global offices.
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
TemBreak268 Pages
Group starter panel model : GS2212 Pages
HS2120 Pages
Low Voltage Breakers36 Pages
Archived catalogs
TemDin Miniature Circuit Breaker107 Pages
Breaking Contacts Brochure8 Pages
Terasaki - Air Circuit Breaker70 Pages
- Monitoring relay
- Current circuit breaker
- Voltage circuit breaker
- Bourn And Koch single-pole circuit breaker
- DIN rail monitoring relay
- Monitoring control system
- Thermal-magnetic circuit breaker
- AC circuit breaker
- DIN rail circuit breaker
- Molded case circuit breaker
- Compact circuit breaker
- Multipole circuit breaker
- Tripolar circuit breaker
- Bipolar circuit breaker
- Current monitoring relay
- Low-voltage circuit breaker
- Motor control system
- Air-operated circuit breaker
- Earth-leakage monitoring relay