Тепловые реле перегрузки
Compare VIOX thermal overload relay series for motor overload protection and coordinated contactor starters. Confirm adjustment range, trip characteristics and contactor compatibility by model.
Защита двигателя от перегрузкиResponds to sustained overload
Current adjustmentMatch the motor nameplate
Starter coordinationPair with contactor and SCPD
Reset and signalingConfirm model functions
Что такое тепловое реле перегрузки?
A thermal overload relay monitors motor current and operates its control contacts when a sustained overload condition exceeds its time-current characteristics. It is commonly coordinated with a contactor in a motor starter.
An overload relay does not normally provide short-circuit interruption. Its adjustment range, trip behavior, phase sensitivity, reset mode, auxiliary contacts, contactor compatibility and upstream short-circuit protection must be selected together.
Overload Relay Series Overview
Сравните опубликованные модели VIOX, используя факты, уже имеющиеся в данных о продукте.
VIOX JR28
Тепловое реле перегрузкиПросмотр данных модели
VIOX JR36
Тепловое реле перегрузкиПросмотр данных модели
VIOX LR2-D13
Тепловое реле перегрузкиПросмотр данных моделиVIOX LR2-D23
Тепловое реле перегрузкиПросмотр данных модели
VIOX LR2-D33
Тепловое реле перегрузкиПросмотр данных модели
New Type Thermal Relay LRD-13
Тепловое реле перегрузкиПросмотр данных моделиHow to choose an overload relay
Begin with the motor nameplate current and starter combination, then verify trip and reset requirements.
Диапазон регулировки
Select a range that includes the motor rated current and follow the setting instructions.
Характеристики поездки
Match starting time, duty and applicable motor-protection requirements.
Совместимость с контактором
Confirm mechanical mounting, current path and accessory compatibility.
Reset and auxiliary functions
Define manual or automatic reset, test, stop and signaling needs.
Coordinate three protection roles
A complete starter coordinates switching, overload response and short-circuit protection.
Compare published Overload Relay series
Пустые ячейки означают, что значение недоступно в текущем обзоре продукции. Откройте страницу модели или запросите технический паспорт перед составлением спецификации.
| Серия | Диапазон регулировки | Класс расцепления | Сброс | Contactor series |
|---|---|---|---|---|
| VIOX JR28 | — | — | — | — |
| VIOX JR36 | — | — | — | — |
| VIOX LR2-D13 | — | — | — | — |
| VIOX LR2-D23 | — | — | — | — |
| VIOX LR2-D33 | — | — | — | — |
| New Type Thermal Relay LRD-13 | — | — | — | — |
Overload Relay Applications
Типовые условия эксплуатации, требующие проверки точных характеристик изделия.
Жилые здания
Protection of selected pumps, fans and building-service motors.
Промышленная автоматизация
Motor starters for conveyors, pumps, compressors and machines.
Солнечная энергетика и системы накопления энергии
Protection of suitable auxiliary motors in energy-system equipment.
Overload Relay Selection Questions
Быстрые ответы для предварительного сравнения семейств продуктов перед детальной проверкой цепи.
What does a thermal overload relay protect against?
It responds to sustained motor overload according to its characteristics and operates the starter control circuit. Exact protection functions vary by model.
Does an overload relay provide short-circuit protection?
Normally no. A coordinated fuse, circuit breaker or motor protective device is required for short-circuit protection.
How is the adjustment range selected?
Choose a relay range that includes the motor nameplate current, then set and commission it according to the motor, starter and product instructions.
What is trip class?
Trip class describes the relay operating-time characteristic under specified overload conditions. The required class depends on the motor starting and protection needs.
Must the relay match the contactor?
Yes. Verify electrical rating, direct-mount or separate-mount compatibility, terminal arrangement and accessory coordination.
Need the Right Overload Relay?
Let’s Coordinate the Motor Starter.
Send the motor nameplate current, starting duty, contactor series, reset requirements, quantity and target market. VIOX will help narrow the relevant published series.
Request Overload Relay Support