Обзор продукции
The VIOX LW26 rotary cam switch provides manual switching for control panels, industrial machinery, electrical distribution equipment, and measurement circuits. Its modular cam-and-contact construction can be configured for circuit changeover, motor control, master control, instrument selection, and other defined switching sequences.
The range covers conventional thermal currents from 10A to 315A and operating voltages up to 440V AC or 240V DC. Maintained, spring-return, and combined operating mechanisms are available with application-specific positions, switching angles, contact sections, and handle markings.
Варианты моделей
| Current Frame | Common Model Designations | Ith | Ui | Reference Ue |
|---|---|---|---|---|
| 10A | LW26-10, LW26-10G, LW26-10X | 10A | 660/690V | 240/440V AC |
| 20A | LW26-20, LW26-20X, LW26-20C | 20A | 660V | 24/110/240/440V, configuration dependent |
| 25A | LW26-25 | 25A | 660V | 24/110/240/440V, configuration dependent |
| 32A | LW26-32, LW26-32F | 32A | 660V | 240/440V AC |
| 40A | LW26-40, LW26-40F | 40A | 660V | 240/440V AC |
| 63A | LW26-63, LW26-63F | 63A | 660V | 240/440V AC |
| 125A | LW26-125 | 125A | 660V | 240/440V AC |
| 160A | LW26-160 | 160A | 660V | 240/440V AC |
| 250А | LW26-250 | 250А | 660V | 240/440V AC |
| 315A | LW26-315 | 315A | 660V | 240/440V AC |
Основные характеристики
- Wide 10A to 315A current range for control and main-circuit applications
- Suitable for AC circuits up to 440V and DC circuits up to 240V
- Maintained, spring-return, and combined operating mechanisms
- Selectable 30°, 45°, 60°, and 90° switching angles
- Modular contact sections for application-specific switching programs
- Panel-mounted construction for control cabinets and machine interfaces
- Configurable poles, positions, handles, markings, and contact diagrams
Технические характеристики
| Параметр | Спецификация |
|---|---|
| Тип продукта | Panel-mounted rotary cam switch |
| Conventional thermal current (Ith) | 10A, 20A, 25A, 32A, 40A, 63A, 125A, 160A, 250A, or 315A |
| Номинальное рабочее напряжение (Ue) | Up to 440V AC; up to 240V DC |
| Номинальное напряжение изоляции (Ui) | 660V for most frames; 660/690V shown for LW26-10 |
| Operating mechanisms | Maintained, spring return, or maintained/spring-return combination |
| Standard switching angles | 30°, 45°, 60°, or 90°, depending on the contact program |
| Mechanical endurance | 0.3 × 106 операции |
| Электрическая выносливость | 0.1 × 106 операции |
| Reference operating frequency | 120 operations per hour |
| Installation plate thickness | 1–3mm in the supplied installation reference |
Utilization-Category Reference Current
These values are transcribed from the supplied technical reference. A dash means that the reference did not state a value for that combination.
| Рамка | AC-21A / AC-22A | AC-23A | АС-3 | AC-4 |
|---|---|---|---|---|
| LW26-10 | 10A | 7.5A | 5.5A | 1.75A |
| LW26-20 | 20A | 15A | 11A | 3.5A |
| LW26-25 | 25A | 22A | 15A | 6,5 А |
| LW26-32 | 32A | 30A | 22A | 11A |
| LW26-40 | — | 37A | 30A | — |
| LW26-63 | 63A | 57A | 36A | 15A |
| LW26-125 | 100A | 90A | 75A | 30A |
| LW26-160 | 150A | 135A | 95A | 55A |
| LW26-250 | 200А | — | — | — |
| LW26-315 | 315A | 265A | 110A | 95A |
Operating Mode and Selection
Select the current frame together with the required positions, switching angle, contact program, and load category. The Ith marking alone is not sufficient for motor or inductive-load selection.
Maintained Operation
The handle remains in the selected position until it is turned again. This arrangement is used for source, instrument, speed, and other stable selection commands.
Spring-Return Operation
The handle returns automatically when released. It is suitable for momentary commands such as start, jog, or reset.
Combined Operation
Maintained and spring-return positions can be combined where one switching program requires both stable and momentary commands.
Positioning-type switches may use 1–12 contact sections; the supplied reference limits frames rated 63A and above to eight sections. Spring-return configurations normally use 1–3 sections, while the LW26-20 reference allows up to eight. Direct motor-control arrangements commonly use 1–6 sections.
Information Required for Selection
- Conventional thermal current and operating voltage
- Load type or utilization category
- Number of poles and contact sections
- Required handle positions and switching angle
- Maintained, spring-return, or combined operation
- Contact sequence, truth table, or wiring diagram
- Panel size, handle style, marking, color, quantity, and destination market
Размеры
The supplied installation reference shows a 1–3mm panel thickness. The LW26-10 drawing uses a central Ø20mm opening with two Ø4.5mm fixing holes on a 30 ±0.20mm spacing reference. Dimensions for LW26-20 through LW26-315 vary with the current frame and operator assembly; confirm the exact drawing before machining the panel.
Приложения
Typical switching, control, and instrument-selection applications for the LW26 include:
- Main and auxiliary circuit changeover
- Direct control of three-phase asynchronous motors
- Forward/reverse, star-delta, and multi-speed motor circuits
- Ammeter and voltmeter selector switches
- Master control and command switching
- Test benches, welding equipment, and industrial machinery
- Control panels, distribution boards, and OEM equipment
Operating and Installation Conditions
- Ambient temperature: −25°C to +40°C
- Average temperature over 24 hours: not more than +25°C
- Maximum installation altitude: 2000m
- Relative humidity: up to 50% at +40°C; higher humidity may be permissible at lower temperatures
- Reference humidity condition: up to 90% at +20°C, with precautions against condensation
- Installation environment: pollution degree 3
- Install according to the wiring program, panel cut-out, and instructions for the selected model
Standards Reference
The supplied technical material references GB/T 14048.3, GB/T 14048.5, and EN 60947-5-1. These are standards references, not a blanket certification claim. Applicable conformity, test documents, and destination-market certification must be confirmed for the exact current frame, contact program, and application before ordering.
ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ
What is an LW26 rotary cam switch used for?
It manually changes a defined group of contacts as the handle moves between positions. Common uses include circuit changeover, motor commands, phase or instrument selection, and master control.
Can one LW26 switch cover several switching positions?
Yes. The cam mechanism can be configured for multiple positions and contact sections. The available sequence depends on the current frame, operating angle, and required wiring program.
Should an LW26 be selected only by its Ith rating?
No. Check the utilization category, operating voltage, motor duty, number of poles, and switching sequence. Motor loads can require a lower operational current than the thermal-current marking.
What information is needed for a custom contact program?
Provide the required positions, switching angle, maintained or spring-return action, number of poles, and a contact truth table or wiring diagram.
Which documents are available for my market?
Documentation depends on the exact model and destination market. Confirm the required standard, test report, or certification with VIOX before ordering.
