UEG3 MCB Disconnector

- Product Name: MCB Disconnector
- Product Model: UEG3-125
- Poles Description: 1P、2P、3P、4P
- Product or Component Type: Switch disconnector
- Device Application: Distribution
- Suitability for Isolation: Yes
- Utilisation Category: AC-22A
- Certificates: CCC/UKCA/CE
Overview
The UEG3-125 series isolation switch is suitable for terminal distribution system isolation and functional disconnection. MCB Disconnector has contact position indication. Suitable for AC 50Hz/60Hz, rated working voltage 230V/400V, rated working current up to 125A lines.
Product Description
UEG3 MCB Disconnectors
UEG3 MCB Disconnector Application
MCB Disconnector used in line facilities, industrial power distribution systems for buildings and similar places.
MCB Disconnector is mainly used for connecting or disconnecting the circuit without load, for connecting or isolating the line and the power supply, especially for effectively isolating the power supply and preventing accidental closing during line maintenance, so as to ensure the operation safety of the maintenance personnel. MCB Disconnector can also be used for infrequent on-off operations.
UEG3 MCB Disconnector Certificates of Compliance
CCC |
GB/T 14048 .2
|
UKCA | BS EN 60947-2 |
CE | EN60947-2 |
UEG3 MCB Disconnector Characteristics
Provide safe use and protection of products:
– Full series of red and green indicator window, indicating the opening and closing state of the contact
– Level 2 electric shock protection, personnel operation is safer
– Rated insulation voltage up to 1000V, MCB Disconnector excellent insulation strength
– Rated impulse withstand voltage up to 8kV, MCB Disconnector can withstand ultra-high transient overvoltage
Provide reliable use of the product:
– MCB Disconnector can withstand higher than the national standard wiring torque, more reliable connection
Convenient replacement operation:
– Bistable buckle design, easy to install and disassemble
Excellent electrical performance:
– MCB Disconnector with fast closing mechanism, better electrical life performance
UEG3 MCB Disconnector
Standard operating environment and installation conditions
– Operating temperature range: -35℃ ~ +70℃
– Storage temperature range: -40℃ ~ +85℃
– Altitude: No more than 2000m
– Pollution level: Level 3
– Installation category: Level III
– Installation method: 35mm standard guide rail installation; The inclination between the mounting surface and the vertical plane shall not exceed ±5°
Technical Parameter 1
- Product Name: UEG3-125
- Product or Component Type: Switch disconnector
- Poles Description: 1P、2P、3P、4P
- Utilisation Category: AC-22A
- Rated Operational Current [Ie]: 32A、40A、50A、 63A、 80A、100A、125A
- Rated Operational Voltage [Ue]: 230 V AC 50/60 Hz(1P); 400 V AC 50/60 Hz(2P、3P、4P)
- Rated Short-Circuit Making Capacity [Icm]: 20In switch-disconnector alone
- Rated Short-Time Withstand Current Icw]: 12In/1s
- Rated Insulation Voltage [Ui] : 1000 V AC 50/60 Hz
- Rated Impulse Withstand Voltage [Uimp]: 8 kV
Technical Parameter 2
- Height: 80mm
- Width: 1P:17.6 mm、2P:35.2 mm、3P:52.8 mm、4P:70.4 mm
- Depth: 75.5mm
- Colour: White
- Mechanical Durability: 10000 cycles
- Electrical Durability: 4000 cycles(≤100A) 1500 cycles(125A)
- Connections - Terminals Single terminal (top or bottom) 4…50mm² rigid
- Connections - Terminals Double terminal (top or bottom) 4…35 mm² flexible
- Wire Stripping Length: 14.5 mm for top or bottom connection
- Tightening Torque: 3.5 N.m top or bottom
- Warranty: 18 months
Why Choose Kemus
Kemus Company Products Superiority




1. Kemus Power Technology is a global leader in mechanical relays with a broad experience with global key accounts. With this international and long-lasting expertise, Kemus offers in addition to its first-class relay products a comprehensive product portfolio for power distribution and protection devices. This enables our global customers to enable solutions from the board to the grid.
2. Kemus low-voltage products cover distribution appliances, terminal appliances, control appliances three categories, widely used in real estate, electricity, new energy, industry, HVAC refrigeration, transportation, information and other fields. After years of dedicated research, we focus on the digital and low-carbon direction of low-voltage electrical appliances, and strive to create stable and reliable distribution products with the purpose of “winning by quality”, and strive to become “the world’s well-known low-voltage electrical suppliers in China”.
3. Kemus low-voltage products three major products:
(1) Power Distribution Components refer to the electrical appliances installed for power distribution, usually the current value is larger than the terminal electrical products, and the volume will be larger. Such as frame circuit breaker, plastic-case circuit breaker, dual power automatic transfer switch, isolation switch and other products, widely used in construction real estate, new energy, power, industrial automation, industrial and mining enterprises and other transmission and distribution and industrial control fields.
(2) The electrical protection devices refers to the switching electrical appliance installed at the end of the circuit, which is used for the distribution, protection, control, alarm, etc., of the relevant circuit and electrical equipment. Such as micro circuit breakers, micro leakage circuit breakers, intelligent micro circuit breakers, self-compound over and under voltage protectors, surge protectors and other products, widely used in construction real estate, new energy, power, industrial automation, industrial and mining enterprises and other transmission and distribution and industrial control fields.
(3) Control gear are appliances that control, regulate and protect electrical equipment. Such as AC contactors, thermal overload relays and other products, widely used in construction real estate, new energy, electric power, industrial automation, industrial and mining enterprises and other transmission and distribution and industrial control fields.
Application Fields






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Kemus is a leading provider of electrical switchgear and electronic components. Our electronic products reflect our commitment to ensuring reliability and adherence to global safety standards, marked by certifications such as UL/CUL, VDE, COC, and CCC. Kemus insists on a comprehensive quality assurance system, ensuring our products meet global standards for safety and reliability.
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FAQ
- What is the customer you work with? We work with famous brands such as: Enel, SMA, JCI, GE, Honeywell, United Technologies, SGCC, Sinopec, China GuoDian, Power China, China Post, ZiJin Minning and so on.
- How does Kemus ensure the quality? Kemus Products has passed CCC, CB, TUV certification.
- Can I get samples from your company? Yes, Samples can be provided.
- How long is the product warranty period? Kemus most of products warranty period is 18 months.
- What is your lead time? Normal within 10 days. It depends on detail items and quantity.
- If products have some quality problem, how would you deal with? Our company will responsible for all the quality problems.