LW26 series universal changeover switch product introduction

LW26 series universal changeover switch is a high-quality product widely used in the field of domestic electrical control. It is manufactured by many well-known electrical companies, including Changxin brand, Changjiang Electric and other brands. This series of products has become an ideal substitute for traditional changeover switches with its excellent performance, diverse functions and wide applicability. The following is a comprehensive introduction to the LW26 series from multiple dimensions such as technical parameters, product features, and application fields.

1. Product Overview and Basic Parameters

LW26 series universal changeover switch is a multi-purpose electrical control component, mainly suitable for electrical circuits with AC 50Hz, rated working voltage 440V and below, DC voltage 240V and below, and rated current from 10A to 160A. The product complies with domestic and international standards such as GB 14048.3, GB 14048.5, IEC 60947-3, IEC 60947-5-1, and some models have also passed the US UL certification and are eligible for access to the international market.

This series of products has complete specifications, and the current levels include 10A, 20A, 25A, 32A, 63A, 125A and 160A, which can meet the control requirements of different power loads. The rated insulation voltage reaches 660V, with good electrical isolation performance. The mechanical life can reach 0.1×10⁶ times, the electrical life is 0.03×10⁶ times, and the operating frequency is 120 times/hour, which is suitable for occasions where the circuit is not frequently connected or disconnected.

2. Product features and design advantages

The LW26 series transfer switch has many outstanding design features and performance advantages:

1. Compact structure and small size: The optimized design reduces the product size while ensuring performance, making it easy to install in a limited space. The panel size has various specifications such as 30×30mm, 48×48mm, 64×64mm, etc. depending on the model.

2. Finger protection safety design: The four switches LW26-10, LW26-20, LW26-25, and LW26-32F are specially designed with finger protection function to effectively prevent fingers from accidentally touching live parts during operation and improve safety of use.

3. Flexible operation mode: The product conversion operation is flexible and provides a variety of handle types and operating angles. Some models can be equipped with protective shells with a protection level of IP65, which is suitable for use in harsh environments.

4. High reliability design: The material selection is exquisite, the insulation performance is good, and the contact system uses high-quality materials to ensure long-term reliability. The appearance is novel and meets the aesthetic needs of modern industrial equipment.

5. Multifunctional derivative models: The series of derivative products include padlock switches and concealed lock switches (63A and below), which can be used as power cut-off switches for important equipment to prevent misoperation and control the operation of unauthorized personnel.

3. Technical Parameters

The LW26 series has rich and comprehensive technical parameters, and different models are optimized for different application scenarios:

(1) Current carrying capacity:

- AC-21A/AC-22A applications: 10A to 150A

- AC-23A applications: 7.5A to 135A

- AC-3 applications (motor control): 5.5A to 95A

- AC-4 applications (jog control): 1.75A to 55A

(2) Control power range:

- AC-23A: 1.8KW to 75KW (three-phase)

- AC-3: 1.5KW to 37KW (three-phase)

- AC-4: 0.37KW to 15KW (three-phase)

(3) Installation size diversity:

- Available in square and rectangular panel forms

- Installation hole spacing ranges from 20mm to 68mm

- External thickness ranges from 28mm to 88mm

(4) Special environmental adaptability:

- Working environment temperature: -5℃ to +40℃

- Average temperature within 24 hours does not exceed +35℃

- Altitude does not exceed 2000 meters

- Must be used in a clean environment

4. Main application areas

Due to its excellent performance and wide adaptability, the LW26 series universal changeover switch is widely used in many fields:

(1) Industrial control field:

- As a circuit control switch, it can realize the switching of various circuit states

- Test equipment switch, used for the selection and switching of test circuits

- Motor control switch, directly controlling the start, stop and reversing of small power motors

(2) Power system field:

- Remote control switch of power distribution equipment

- Power switching device, realizing the conversion of main and standby power supplies

- Phase change measurement control of electrical measuring instruments

(3) Special equipment field:

- Changeover switch for electric welding machines, some models are particularly suitable for welding machine applications

- Machine tool control circuit, realizing the switching of various operation modes

- Servo system control, used for signal switching and combination

(4) Safety-critical field:

- Power cut-off switch for important equipment (using padlock type or concealed lock type derivative model)

- Explosion-proof environment application (special model with explosion-proof shaft)

- Critical equipment that needs to prevent unauthorized personnel from operating

5. Model replacement and market positioning

LW26 series, as a new ideal replacement product, can replace many existing traditional switch models in China, including:

- LW2, LW5, LW6, LW8, LW12, LW15 series universal conversion switches

- HZ5, HZ10, HZ12 series combination switches

- Conversion switches on some imported equipment

This series of products is produced by many companies, among which the Changxin brand LW26 series produced by Wenzhou Changjiang Electric Switch Factory has passed the US UL certification and is widely used by domestic welding machine manufacturers on exported welding machine products. Zhejiang Fulu Explosion-proof Technology Co., Ltd. has also launched an explosion-proof model with explosion-proof shaft, suitable for hazardous environments.

6. Selection Guide

In practical applications, the following factors should be considered when selecting the LW26 series:

(1) Select the appropriate model

(2) Operating frequency requirements: For occasions that require frequent operation, a model with a longer operating life should be selected

(3) Safety protection requirements: Select a lockable model for occasions that need to prevent misoperation; select a finger-protected model for occasions with the risk of electric shock

(4) Environmental conditions: Select an IP65 protection model for humid and dusty environments; select a flameproof model for explosion-proof environments

(5) Installation space restrictions: Select the appropriate panel size and thickness based on the available space

(6) Control complexity: Select the number of contact nodes and combination methods based on the number of circuits to be controlled

The LW26 series has become an important choice in the field of industrial control with its comprehensive performance, diverse models and wide applicability. Whether it is traditional electrical control or modern automation systems, the LW26 series universal changeover switches can provide reliable and flexible solutions.