LW26 Rotary Switch / Universal Changeover Switch
LW26 Rotary Switch / Universal Changeover Switch
Model Series:LW26
Rated Insulation Voltage (Ui):660V
Rated Operating Voltage (Ue):AC ≤440V, DC ≤240V
Rated Current (Ie):10A, 20A, 25A, 32A, 63A, 125A, 160A
Frequency:AC 50/60Hz
Operating Angle:30°, 45°, 60°, 90°
Contact Sections:1~12 sections (customizable)
Positioning Type:Self-locking / Momentary (Spring return)
Mechanical Life:≥100,000 times
Electrical Life:≥50,000 times
Protection Degree:IP20 (front panel)
Operating Temperature:-25℃ ~ +55℃
Model Series:LW26
Rated Insulation Voltage (Ui):660V
Rated Operating Voltage (Ue):AC ≤440V, DC ≤240V
Rated Current (Ie):10A, 20A, 25A, 32A, 63A, 125A, 160A
Frequency:AC 50/60Hz
Operating Angle:30°, 45°, 60°, 90°
Contact Sections:1~12 sections (customizable)
Positioning Type:Self-locking / Momentary (Spring return)
Mechanical Life:≥100,000 times
Electrical Life:≥50,000 times
Protection Degree:IP20 (front panel)
Operating Temperature:-25℃ ~ +55℃
1. Product Overview
LW26-20 series universal rotary cam switch is classic industrial control changeover switch designed for low voltage AC/DC circuit conversion, rated working current 20A. This modular cam rotary switch supports multiple circuit wiring schemes, with two handle types: standard plastic rotary knob and anti-theft key lock handle, plus flexible 2-position(0-1/0-2) or 3-position(1-0-2) switching modes.
Reliable silver alloy moving contacts and flame retardant blue nylon base ensure stable electric conduction and long service life. It is extensively applied in industrial control cabinet, water pump/motor control, on-site & remote switching, equipment power selection and instrumentation circuit conversion.
2. Key Features
- Multiple Handle Options: Ordinary rotary handle and key-locked safety handle to avoid unauthorized operation.
- Flexible Position Selection: Customizable 2-position or 3-position switching logic according to circuit requirements.
- Silver Alloy Contacts: Low contact resistance, anti-arc & anti-welding for frequent switching operations.
- Flame Retardant Housing: Blue high-temperature resistant PA plastic base, insulation and anti-break performance.
- Modular Multi-layer Structure: 1P~8P layers optional for different circuit wiring combinations.
- Wide Voltage Compatibility: Suitable for AC380V, AC220V and DC220V control circuits.
- CE & IEC Certified: Comply with IEC60947-5-1 international standard for control switch.
3. Technical Specification
| Parameter | Specification |
|---|---|
| Model | LW26-20 |
| Rated Current | 20A |
| Rated Voltage | AC 380V / DC 220V |
| Handle Type | Standard Rotary Handle / Key Lock Handle |
| Switch Position | 2 Position /3 Position customizable |
| Contact Material | Silver Alloy |
| Base Material | Flame retardant Nylon PA |
| Mechanical Life | ≥100,000 cycles |
| Compliance | IEC60947-5-1, CE Certified |
| Operating Temp | -25℃ ~ +70℃ |
| Model | Ith A |
Ui V |
Ue V |
AC-21A | AC-22AÂ Â Â AC-23A | AC-2 | AC-3 | AC-4 | AC-15 | DC-13 | |||||
| le A | le A | le A | P  kW | leA | P  kW | le A | P kW | leA | P  kW | le A | leA | ||||
| LW26-10 | 10 | 660 | 240 | 10 | 7.5 | 1.8 | 7.5 | 2.5 | 5.5 | 1.5 | 1.75 | 0.37 | 2.5 | ||
| 10 | 660 | 440 | 10 | 7.5 | 3.0 | 7.5 | 3.7 | 5.5 | 2.2 | 1.75 | 0.55 | 1.5 | |||
| LW26-20 | 20 | 660 | 440 | 20 | 15 | 7.5 | 15 | 7.5 | 11 | 5.5 | 3.5 | 1.5 | 4 | ||
| 20 | 660 | 240 | 5 | 1 | |||||||||||
| 20 | 660 | 120 | 5 | ||||||||||||
| LW26-25 | 25 | 660 | 440 | Â 25 | 22 | 11 | 22 | 11 | 15 | 7.5 | 6.5 | 3 | 5 | ||
| 25 | 660 | 240 | 8 | 1.5 | |||||||||||
| 25 | 660 | 120 | Â 32 | 30 | 15 | 30 | 15 | 22 | 11 | 11 | 5.5 | 9 | |||
| LW26-32 | 32 | 660 | 440 | 6 | |||||||||||
| 32 | 660 | 240 | 14 | 11 | |||||||||||
| 32 | 660 | 120 | 25 | ||||||||||||
| LW26-63 | 63 | 660 | 440 | Â 63 | 57 | 30 | 57 | 30 | 36 | 18.5 | 15 | 7.5 | |||
| 63 | 660 | 120 | 55 | ||||||||||||
| LW26-125 | 125 | 660 | 440 | 125 | 90 | 45 | 90 | 45 | 75 | 30 | 30 | 12 | 90 | ||
| LW26-160 | 160 | 660 | 440 | 160 | 135 | 75 | 135 | 55 | 95 | 37 | 55 | 15 | 110 | ||
4. Working Principle
The switch relies on built-in precision cam structure to drive moving contact:
- Rotate front handle/key to shift internal cam angle, which pushes movable contacts to connect or disconnect fixed contacts.
- Different cam layout realizes 0-1 two-position single circuit switch or 1-0-2 three-position double-circuit switching for power source selection and motor forward/reverse change.
- Key-lock version can lock handle at designated position to prevent accidental misoperation by irrelevant personnel.
5. Main Application Fields
- Industrial machinery: Motor forward-stop-reverse control for pumps, fans and conveyors
- Control cabinet: Local/remote mode switching for PLC and automation equipment
- Power distribution: Dual power manual selection switch inside distribution box
- Instrumentation: Test circuit conversion for electrical measuring equipment
- Building equipment: Elevator auxiliary control, air-conditioning unit mode selection
6. Installation & Operation Instruction
- Panel cutout size matches standard mounting hole, embed switch body into control cabinet panel and fasten front fixing nut.
- Wire each terminal according to customer’s circuit diagram and switch wiring chart.
- Rotate handle manually to test smooth position shift and reliable contact connection.
- Key lock model: Insert key to unlock handle for switching; pull out key to lock position to prevent random rotation.
7. FAQ
Q1: What does LW26-20 mean?
LW=Universal rotary switch series,26=product design serial number,20=rated working current 20A.
Q2: Can I customize special wiring diagrams?
Yes, we support custom cam logic and wiring schemes for special control circuits with bulk orders.
Q3: What’s the difference between key handle and regular handle?
Key-lock handle can extract key only at fixed position to lock switch state, ideal for safety management and anti-misoperation scenario; normal knob is free to rotate anytime.
Q4: Can this switch control big power motor directly?
LW26-20 is control circuit switch, it controls contactor coil instead of directly connecting high-power motor main circuit.
Q5: Is this switch available for DC circuit?
Yes, it works well on DC220V control loop as per rated parameter.
8. Technical Documents & Support
Download the full datasheet for detailed specifications, wiring diagrams, and trip coordination guidelines.
Contact our engineering team for custom configurations, communication module integration, or OEM solutions for large-scale projects.
Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
1. Product Overview
LW26-20 series universal rotary cam switch is classic industrial control changeover switch designed for low voltage AC/DC circuit conversion, rated working current 20A. This modular cam rotary switch supports multiple circuit wiring schemes, with two handle types: standard plastic rotary knob and anti-theft key lock handle, plus flexible 2-position(0-1/0-2) or 3-position(1-0-2) switching modes.
Reliable silver alloy moving contacts and flame retardant blue nylon base ensure stable electric conduction and long service life. It is extensively applied in industrial control cabinet, water pump/motor control, on-site & remote switching, equipment power selection and instrumentation circuit conversion.
2. Key Features
- Multiple Handle Options: Ordinary rotary handle and key-locked safety handle to avoid unauthorized operation.
- Flexible Position Selection: Customizable 2-position or 3-position switching logic according to circuit requirements.
- Silver Alloy Contacts: Low contact resistance, anti-arc & anti-welding for frequent switching operations.
- Flame Retardant Housing: Blue high-temperature resistant PA plastic base, insulation and anti-break performance.
- Modular Multi-layer Structure: 1P~8P layers optional for different circuit wiring combinations.
- Wide Voltage Compatibility: Suitable for AC380V, AC220V and DC220V control circuits.
- CE & IEC Certified: Comply with IEC60947-5-1 international standard for control switch.
3. Technical Specification
| Parameter | Specification |
|---|---|
| Model | LW26-20 |
| Rated Current | 20A |
| Rated Voltage | AC 380V / DC 220V |
| Handle Type | Standard Rotary Handle / Key Lock Handle |
| Switch Position | 2 Position /3 Position customizable |
| Contact Material | Silver Alloy |
| Base Material | Flame retardant Nylon PA |
| Mechanical Life | ≥100,000 cycles |
| Compliance | IEC60947-5-1, CE Certified |
| Operating Temp | -25℃ ~ +70℃ |
| Model | Ith A |
Ui V |
Ue V |
AC-21A | AC-22AÂ Â Â AC-23A | AC-2 | AC-3 | AC-4 | AC-15 | DC-13 | |||||
| le A | le A | le A | P  kW | leA | P  kW | le A | P kW | leA | P  kW | le A | leA | ||||
| LW26-10 | 10 | 660 | 240 | 10 | 7.5 | 1.8 | 7.5 | 2.5 | 5.5 | 1.5 | 1.75 | 0.37 | 2.5 | ||
| 10 | 660 | 440 | 10 | 7.5 | 3.0 | 7.5 | 3.7 | 5.5 | 2.2 | 1.75 | 0.55 | 1.5 | |||
| LW26-20 | 20 | 660 | 440 | 20 | 15 | 7.5 | 15 | 7.5 | 11 | 5.5 | 3.5 | 1.5 | 4 | ||
| 20 | 660 | 240 | 5 | 1 | |||||||||||
| 20 | 660 | 120 | 5 | ||||||||||||
| LW26-25 | 25 | 660 | 440 | Â 25 | 22 | 11 | 22 | 11 | 15 | 7.5 | 6.5 | 3 | 5 | ||
| 25 | 660 | 240 | 8 | 1.5 | |||||||||||
| 25 | 660 | 120 | Â 32 | 30 | 15 | 30 | 15 | 22 | 11 | 11 | 5.5 | 9 | |||
| LW26-32 | 32 | 660 | 440 | 6 | |||||||||||
| 32 | 660 | 240 | 14 | 11 | |||||||||||
| 32 | 660 | 120 | 25 | ||||||||||||
| LW26-63 | 63 | 660 | 440 | Â 63 | 57 | 30 | 57 | 30 | 36 | 18.5 | 15 | 7.5 | |||
| 63 | 660 | 120 | 55 | ||||||||||||
| LW26-125 | 125 | 660 | 440 | 125 | 90 | 45 | 90 | 45 | 75 | 30 | 30 | 12 | 90 | ||
| LW26-160 | 160 | 660 | 440 | 160 | 135 | 75 | 135 | 55 | 95 | 37 | 55 | 15 | 110 | ||
4. Working Principle
The switch relies on built-in precision cam structure to drive moving contact:
- Rotate front handle/key to shift internal cam angle, which pushes movable contacts to connect or disconnect fixed contacts.
- Different cam layout realizes 0-1 two-position single circuit switch or 1-0-2 three-position double-circuit switching for power source selection and motor forward/reverse change.
- Key-lock version can lock handle at designated position to prevent accidental misoperation by irrelevant personnel.
5. Main Application Fields
- Industrial machinery: Motor forward-stop-reverse control for pumps, fans and conveyors
- Control cabinet: Local/remote mode switching for PLC and automation equipment
- Power distribution: Dual power manual selection switch inside distribution box
- Instrumentation: Test circuit conversion for electrical measuring equipment
- Building equipment: Elevator auxiliary control, air-conditioning unit mode selection
6. Installation & Operation Instruction
- Panel cutout size matches standard mounting hole, embed switch body into control cabinet panel and fasten front fixing nut.
- Wire each terminal according to customer’s circuit diagram and switch wiring chart.
- Rotate handle manually to test smooth position shift and reliable contact connection.
- Key lock model: Insert key to unlock handle for switching; pull out key to lock position to prevent random rotation.
7. FAQ
Q1: What does LW26-20 mean?
LW=Universal rotary switch series,26=product design serial number,20=rated working current 20A.
Q2: Can I customize special wiring diagrams?
Yes, we support custom cam logic and wiring schemes for special control circuits with bulk orders.
Q3: What’s the difference between key handle and regular handle?
Key-lock handle can extract key only at fixed position to lock switch state, ideal for safety management and anti-misoperation scenario; normal knob is free to rotate anytime.
Q4: Can this switch control big power motor directly?
LW26-20 is control circuit switch, it controls contactor coil instead of directly connecting high-power motor main circuit.
Q5: Is this switch available for DC circuit?
Yes, it works well on DC220V control loop as per rated parameter.
8. Technical Documents & Support
Download the full datasheet for detailed specifications, wiring diagrams, and trip coordination guidelines.
Contact our engineering team for custom configurations, communication module integration, or OEM solutions for large-scale projects.
Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
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