Introduction
LSIS offers a wide range of Miniature Circuit Breakers (MCBs) and Circuit Protectors (CBEs) designed for reliable circuit protection in various industrial and commercial applications. These devices safeguard electrical equipment from overloads and short circuits, ensuring operational safety and longevity.
BK63H CE(IEC) Series
This series features miniature circuit breakers compliant with IEC standards, offering robust protection for electrical circuits.
Key Features
- Poles: 1P, 2P, 3P, 4P
- Rated Current: 1A to 63A
- Rated Breaking Capacity: 10kA
- Instantaneous Trip Characteristics: B, C, D
- Protection Function: Overload and short-circuit current
- Status indicator window and dual terminal application
- Wide range of accessories available
Specifications
| Parameter | Model | BK63H | Unit |
| Frame Size | 63AF | ||
| Poles | 1P, 2P, 3P, 4P | ||
| Rated Current, In | 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 | A | |
| Rated Breaking Capacity | IEC 60947-2, Icu | 1P: 10kA 2P, 3P, 4P: 10kA | kA |
| Ics (=%Icu) | 75% | % | |
| IEC 60898 | AC240/415V | 10kA | kA |
| Rated Voltage | AC | 240V | 240/415V |
| DC | 60V | 125V | |
| Rated Insulation Voltage (Ui) | AC 500V | ||
| Rated Impulse Voltage (Uimp) | AC 6kV | ||
| Rated Frequency | 50/60 Hz | ||
| Instantaneous Trip Characteristic | B(4In), C(7.5In), D(12In) | ||
| Protection Function | Overload, Short-circuit Current | ||
| Durability | Electrical | 10,000 | Cycles |
| Mechanical | 20,000 | Cycles | |
| Protection Rating | IP20 | ||
| Wire Size & Torque | 18-4 AWG (0.75 - 25mm²) 20 Kgf.cm | ||
| Installation Method | 35mm Din Rail Mounting | ||
| Terminal Structure | Lug/Screw Double Structure | ||
| Overcurrent Trip Method | Thermal-Magnetic | ||
| Ambient Temperature | -25 to +55°C (Operating) | °C | |
| Approvals | CE, KC (Safety Certification), SEMKO CB | ||
| Classifications | ABS, BV, DNV, GL, KR, LR, RINA |
Accessories
The BK63H series supports various accessories:
- AX-H: Auxiliary switch for ON/OFF status signal output.
- AL-H: Alarm switch for TRIP status signal output.
- SHT-H: Shunt trip unit.
- OVT-H: Over-voltage trip unit.
- UVT-H: Under-voltage trip unit.
Dimensions
Diagrams showing the external dimensions for 1-pole, 2-pole, 3-pole, and 4-pole BK63H units are available, with key measurements provided in millimeters.
Characteristic Curves
Time-current characteristic curves illustrate the tripping behavior for different instantaneous trip types (B, C, D) under various current multiples.
BK63H DC Series
Designed for DC circuits, these breakers are suitable for solar power generation and renewable energy systems.
Key Features
- Suitable for solar power generation, renewable energy DC power systems.
- SEMKO CB certified.
- Max Operating Voltage: DC1,000V.
- Poles: 1P, 2P, 3P, 4P.
- Rated Voltage: DC250V, DC500V, DC750V, DC1000V.
- Rated Breaking Capacity: 10kA.
- Trip Characteristics: B, C.
- Accessories: AX, AL, SHT.
Specifications
| Parameter | Model | BK63H DC | Unit |
| Frame Size | 63AF | ||
| Poles | 1P, 2P, 3P, 4P | ||
| Rated Current, In | 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 | A | |
| Rated Breaking Capacity | DC IEC 60947-2, Icu | 1P: 250V, 10kA 2P: 500V, 10kA 3P: 750V, 10kA 4P: 1000V, 10kA | kA |
| Instantaneous Trip Characteristic | B(5In), C(8In) | ||
| Protection Function | Overload, Short-circuit Current | ||
| Durability | Electrical | 1500 | Cycles |
| Protection Rating | IP20 | ||
| Wire Size & Torque | 18-4 AWG (0.75 - 25mm²) 20 Kgf.cm | ||
| Installation Method | 35mm Din Rail Mounting | ||
| Terminal Structure | Lug Type | ||
| Overcurrent Trip Method | Thermal-Magnetic | ||
| Ambient Temperature | 40°C (Reference), -25 to +55°C (Operating) | °C | |
| Approvals | CE, SEMKO CB |
DC Wiring Diagrams
Diagrams illustrate DC circuit connection schematics for 1-pole, 2-pole, 3-pole, and 4-pole configurations.
BK63HU / BK63HU (Q class) CE(IEC) Series
These breakers offer enhanced protection and compliance with IEC and safety certifications.
Key Features
- Poles: 1P, 2P, 3P.
- Rated Current: 1A to 63A.
- Rated Breaking Capacity: 1P 10kA / 2,3P 6kA.
- Instantaneous Trip Characteristics: 4Ii, 7.5Ii, 12Ii.
- Protection Function: Overload and short-circuit current.
- Accessories: AX, AL, SHT, UVT.
Specifications
| Parameter | Model | BK63HU / BK63HU (Q Class) | Unit |
| Frame Size | 63AF | ||
| Poles | 1P, 2P, 3P, 4P | ||
| Rated Current, In | 1, 2, 3, 4, 5, 6, 8, 10, 15, 16, 20, 25, 30, 32, 40, 50, 63 | A | |
| Rated Breaking Capacity | IEC 60947-2, Icu | 1P: 10kA 2P, 3P, 4P: 6kA | kA |
| IEC 60898 | AC240/415V | 10kA | 10kA |
| Rated Voltage | AC | 240V | 440V |
| DC | 60V | 125V | |
| Rated Insulation Voltage (Ui) | AC 500V | ||
| Rated Impulse Voltage (Uimp) | AC 6kV | ||
| Rated Frequency | 50/60 Hz | ||
| Instantaneous Trip Characteristic | 4In, 7.5In, 12In / B,C,D | ||
| Protection Function | Overload, Short-circuit Current | ||
| Durability | Electrical | 10,000 | Cycles |
| Mechanical | 20,000 | Cycles | |
| Protection Rating | IP20 | ||
| Wire Size & Torque | 18-4 AWG (0.75 - 25mm²) 20 Kgf.cm | ||
| Installation Method | 35mm Din Rail Mounting | ||
| Terminal Structure | Lug/Screw Double Structure | ||
| Overcurrent Trip Method | Thermal-Magnetic | ||
| Ambient Temperature | -25 to +55°C (Operating) | °C | |
| Approvals | CE, KC (Safety Certification), Q class, SEMKO CB |
Dimensions
Diagrams detailing the external dimensions for BK63HU/BK63HU (Q class) accessories (AX-HU, AL-HU, SHT-HU, UVT-HU) are provided.
BK63HU UL489 Series
These circuit breakers are certified to UL489 standards, suitable for North American electrical systems.
Key Features
- Poles: 1P, 2P, 3P, 4P.
- Rated Current: 1A to 63A.
- Rated Breaking Capacity: 10kA.
- Instantaneous Trip Characteristics: B, C, D.
- Protection Function: Overload and short-circuit current.
- Status indicator window and dual terminal application.
- Accessories: AX, AL, SHT, UVT, OVT.
Specifications
| Parameter | Model | BK63HU | Unit |
| Frame Size | 63AF | ||
| Poles | 1P, 2P, 3P | ||
| Rated Current, In | 1, 2, 3, 4, 5, 6, 8, 10, 15, 16, 20, 25, 30, 32, 40, 50, 63 | A | |
| Rated Breaking Capacity | UL | 1P: 10kA 10kA(1~25A) for 2P, 3P | kA |
| Rated Voltage | AC | 120/240V | 240/415V |
| AC | 240V | 240/415V | |
| AC | 480Y/277V | - | |
| DC | 60V | 125V | |
| Rated Frequency | 50/60 Hz | ||
| Instantaneous Trip Characteristic | B(3~5In), C(5~10In), D(10~20In) | ||
| Protection Function | Overload, Short-circuit Current | ||
| Durability | Electrical | 6000 | Cycles |
| Max Switching Frequency | 360/hour | ||
| Protection Rating | IP20 | ||
| Wire Size & Torque | 14/4 AWG, 3.9 Nm (35 lbf-in) | ||
| Installation Method | 35mm Din Rail Mounting | ||
| Overcurrent Trip Method | Thermal-Magnetic | ||
| Ambient Temperature & Humidity | 40°C (Reference), -25 to +55°C (Operating), 45-85% RH | ||
| Standards | Applied | UL489, UL486E (Lug) | |
| Approvals | UL |
Accessories
Accessories for the BK63HU UL489 series include AX-H, AL-H, SHT-HU, and UVT-HU, providing additional functionality.
BK63H UL1077 Series
Designed to meet UL1077 standards, these circuit breakers are suitable for supplementary protection.
Key Features
- Poles: 1P, 2P, 3P, 4P.
- Rated Current: 1A to 63A.
- Rated Breaking Capacity: 10kA.
- Instantaneous Trip Characteristics: B, C, D.
- Protection Function: Overload and short-circuit current.
- Accessories: AX, AL, SHT, UVT.
Specifications
| Parameter | Model | BK63H | Unit |
| Frame Size | 63AF | ||
| Poles | 1P, 2P, 3P, 4P | ||
| Rated Current, In | 1, 2, 3, 4, 5, 6, 8, 10, 15, 16, 20, 25, 30, 32, 40, 50, 63 | A | |
| Rated Breaking Capacity | UL | AC120/240V: 10kA AC240V: 10kA AC480Y/277V: 6kA AC277V: 6kA | kA |
| Rated Voltage | DC | 60V | 125V |
| Rated Frequency | 50/60 Hz | ||
| Instantaneous Trip Characteristic | B(3~5In), C(5~10In), D(10~20In) | ||
| Protection Function | Overload, Short-circuit Current | ||
| Durability | Electrical | 6000 | Cycles |
| Max Switching Frequency | 360/hour | ||
| Protection Rating | IP20 | ||
| Wire Size & Torque | 14/4 AWG, 3.9 Nm (35 lbf-in) | ||
| Installation Method | 35mm Din Rail Mounting | ||
| Overcurrent Trip Method | Thermal-Magnetic | ||
| Ambient Temperature & Humidity | 40°C (Reference), -25 to +55°C (Operating), 45-85% RH | ||
| Standards | Applied | UL1077 | |
| Approvals | UL, CB, CCC |
Accessories
Accessories for the BK63H UL1077 series include AX-H, AL-H, SHT-H, and UVT-H.
LCP Circuit Protector Series
The LCP series are Circuit Protectors for Equipment (CBEs) designed to protect devices from overcurrents, offering faster response times than traditional MCCBs in certain applications.
Key Features
- Circuit Protector for Equipment (CBE).
- Protects electrical circuits and devices from overcurrents.
- Faster tripping response compared to MCCBs for semiconductor protection.
- Suitable for communication equipment, transportation systems, and various electronic devices.
Specifications
| Item | Circuit Protector (CBE) KS C IEC 60934 | MCB KS C 8321 | MCCB KSC 8332 |
| Rated Voltage | AC 440V or below, DC 250V or below | AC 380V or below | AC 1,000V or below |
| Rated Current | 125A | 25kA | 2,000A |
| Rated Breaking Capacity | 3kA or below | 25kA or below | 200kA or below |
LCP Specifications
| Parameter | LCP-31FM | LCP-32FM | LCP-33FM | LCP-32FI | Unit | |
| Poles | 1 | 2 | 3 | 2 | ||
| Rated Insulation Voltage, Ui | AC/DC 250/65 | AC/DC 250/125 | 250 | AC/DC 250/125 | V | |
| Rated Current, In | 0.1, 0.3, 0.5, 1, 2, 3, 5, 7, 10, 15, 20, 25, 30 | 2, 3, 5, 10, 15, 20, 30 | 2, 3, 5, 10, 15, 20, 30 | A | ||
| Rated Breaking Capacity | IEC60947-2 | 1500 | 1500 | 1500 | A | |
| IEC60934 | 2500 | 2500 | 2500 | 2500 | A | |
| Trip Type | ODP (HM) | |||||
| Standard Ambient Temperature | 40 | °C | ||||
| Operating Ambient Temperature | -10 to +60 (Storage: -40 to +60), ensure no freezing | °C | ||||
| Allowable Relative Humidity | 45~85% | % | ||||
| Trip Characteristic | Slow Type | |||||
| Durability | Electrical / Mechanical Life | 10,000+ (No Load / Load) | Cycles | |||
| Accessories | AX (WA,WB) / AL (KA,KB) | |||||
| Installation Method | Screw Mounting, Din rail compatible | |||||
| Dimensions (W x D) | 17.5 x 65 | mm | ||||
| Applicable Standards | IEC60934, IEC60947-2, UL, CCC | |||||
| Trip Time Characteristic (7x Rated Current) | 1.6s (Max) |
LCP Model Naming Convention
The naming convention follows: LCP3 - [Pole] - [Series Type] - [Trip Type] - [Current] - [Accessory]. For example, LCP3-1-F-M-0.1A-WA.
Characteristic Curves
Time-current characteristic curves are provided for both slow-type and instantaneous-type LCP circuit protectors, illustrating their tripping behavior.
Dimensions
Detailed external dimensions for LCP units and their accessories (AX/AL) are presented in diagrams.
Model Naming Convention
The naming convention for LSIS Miniature Circuit Breakers (MCBs) and Circuit Protectors (CBEs) follows a structured format to identify key specifications such as series, frame size, poles, trip characteristics, rated current, breaking capacity, voltage, and applicable standards (e.g., IEC, UL).
LCP vs BK63H Comparison
A comparative analysis highlights the differences between the LCP Circuit Protector series and the BK63H Miniature Circuit Breaker series, focusing on specifications like rated voltage, current, breaking capacity, trip characteristics, durability, accessories, dimensions, and applicable standards.
Safety Instructions
- For your safety, please read the user's manual thoroughly before operating.
- Contact the nearest authorized service facility for examination, repair, or adjustment.
- Please contact a qualified service technician when maintenance is required.
- Do not disassemble or repair by yourself.
- All maintenance and inspection shall be performed by qualified personnel.
LSIS Company Information
Head Office
LSIS Co., Ltd.
LS-ro 127 (Hogye-dong) Dongan-gu, Anyang-si, Gyeonggi-Do Korea
Tel: +82-2-2034-4902, 4684, 4429
Fax: +82-2-2034-4555
Customer Center: +82-1644-5481
Global Network
LSIS operates a global network of subsidiaries and branches to provide service and support worldwide. Key locations include USA, Middle East (Dubai), Europe (Netherlands), Japan, China (Dalian, Wuxi), and Vietnam.
