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Westhomes JR36 sealed electromagnetic thermal overload relay, 0.1A–140A, miniature pin type, AC copper contacts. Screw or DIN rail mount. Compact design for long-distance motor protection and industrial control.
Westhomes JR36 sealed electromagnetic thermal overload relay, 0.1A–140A, miniature pin type, AC copper contacts. Screw or DIN rail mount. Compact design for long-distance motor protection and industrial control.
The Westhomes JR36 Sealed Electromagnetic Thermal Overload Relay is a compact and versatile protection device engineered for precise motor overload protection in space-constrained industrial applications. Featuring a miniature pin-type design, this relay delivers reliable thermal protection while occupying minimal panel space, making it an ideal choice for modern control systems where density and efficiency are paramount.
Key Features：
Ultra-Wide Current Range: Adjustable from 0.1A to 140A, covering a vast spectrum of motor sizes from miniature to heavy-duty applications
Miniature Pin-Type Design: Compact footprint enables high-density panel layouts and saves valuable cabinet space.
Sealed Electromagnetic Construction: Encapsulated design provides enhanced protection against dust, moisture, and environmental contaminants
AC Copper Contacts: High-conductivity copper contacts ensure low contact resistance, reliable switching, and extended electrical life
Applications:
Elevator and escalator control systems
Control cabinets with space constraints
Retrofit and upgrade of existing motor protection installations
| Model | Current Adjus- tment Range |
Control Power(kW) | Pluggable Contactor | Short Circuit Protection Fusegreed Heating Current |
|||||
| 220V | 380V | 415V | 440V | 660V | aM | gG | |||
| JR28-09301d | 0.1~0.16 | CJX2-09~25 | 0.25 | 2 | |||||
| JR28-09302d | 0.16~0.25 | CJX2-09~25 | 0.5 | 2 | |||||
| JR28-09303d | 0.25~0.40 | CJX2-09~25 | 1 | 2 | |||||
| JR28-09304d | 0.40~0.63 | 0.37 | CJX2-09~25 | 1 | 2 | ||||
| JR28-09305d | 0.63~1 | 0.55 | CJX2-09~25 | 2 | 4 | ||||
| JR28-09306d | 1~1.6 | 0.37 | 0.55 | 0.75 | CJX2-09~25 | 2 | 4 | ||
| JR28-09307d | 1.6~2.5 | 0.37 | 0.55 | 0.75 | 1.1 | 1.5 | CJX2-09~25 | 4 | 6 |
| JR28-09308d | 2.5~4 | 0.75 | 1.1 | 1.5 | 2.2 | 3 | CJX2-09~25 | 6 | 10 |
| JR28-09310d | 4~6 | 1.1 | 2.2 | 2.2 | 2.2 | 4 | CJX2-09~25 | 8 | 16 |
| JR28-09312d | 5.5~8 | 1.5 | 3 | 3.7 | 3.7 | 5.5 | CJX2-09~25 | 12 | 20 |
| JR28-09314d | 7~10 | 2.2 | 4 | 4 | 4 | 7.5 | CJX2-09~25 | 12 | 20 |
| JR28-12316d | 9~13 | 3 | 5.5 | 5.5 | 5.5 | 10 | CJX2-09~25 | 16 | 25 |
| JR28-18321d | 12~18 | 4 | 7.5 | 9 | 9 | 15 | CJX2-09~25 | 20 | 35 |
| JR28-25322d | 17~25 | 5.5 | 11 | 11 | 11 | 18.5 | CJX2-09~25 | 25 | 50 |
| JR28-32353d | 23~32 | 7.5 | 15 | 15 | 15 | 22 | CJX2-32 | 40 | 63 |
| JR28-32355d | 28~36 | 10 | 18.5 | 22 | 22 | 30 | CJX2-32 | 40 | 80 |
| JR28-40353d | 23~32 | 7.5 | 15 | 15 | 15 | 22 | CJX2-40~80 | 40 | 63 |
| JR28-40355d | 30~40 | 10 | 18.5 | 22 | 22 | 30 | CJX2-40~80 | 40 | 80 |
| JR28-50357d | 37~50 | 11 | 22 | 25 | 25 | 37 | CJX2-40~80 | 63 | 100 |
| JR28-65359d | 48~65 | 15 | 25 | 30 | 30 | 45 | CJX2-40~80 | 63 | 100 |
| JR28-65361d | 55~70 | 18.5 | 30 | 37 | 37 | 55 | CJX2-40~80 | 80 | 125 |
| JR28-80363d | 63~80 | 22 | 37 | 45 | 45 | 75 | CJX2-40~80 | 80 | 125 |
| JR28-140365d | 80~104 | 30 | 45 | 55 | 55 | 75 | CJX2-115~170 | 125 | 200 |
| JR28-140367d | 95~120 | 30 | 55 | 75 | 75 | 90 | CJX2-115~170 | 125 | 224 |
| JR28-140369d | 110~140 | 37 | 63 | 75 | 75 | 110 | CJX2-115~170 | 160 | 250 |
| Selling Units | Single item |
| Quantity (pieces) | 1 – 100 | > 100 |
| Lead time (days) | 15 | To be negotiated |
| Theory | AC |
| Power Source | 50 Hz, 60 Hz |
| Terminal Shape | Screw or rail installation |
| Contact Material | CJX2 |
| Place of Origin | Zhejiang, China |
| Rated Current | 0.1-140A |
| Size | Miniature |
| Contact Load | Low Power |
| Model Number | JR28 |
| Brand Name | Westhomes |
The Westhomes JR36 Sealed Electromagnetic Thermal Overload Relay is a motor protection device designed to protect AC motors from overload, phase failure, and abnormal current conditions. Its sealed structure helps improve durability and reliability in industrial environments.
The JR36 Thermal Overload Relay monitors motor current during operation. When the current exceeds the preset value for a certain period, the relay activates the trip mechanism to disconnect the control circuit and help prevent motor overheating and damage.
Electromagnetic thermal protection combines thermal sensing and electromagnetic response technologies. The thermal function provides protection against long-term overload conditions, while the electromagnetic function improves response performance under abnormal current situations.
The JR36 is suitable for various industrial motor applications, including pumps, fans, compressors, conveyors, machine tools, and other motor-driven equipment. It is commonly used in motor control panels and low-voltage electrical systems.
A thermal overload relay mainly provides overload and phase failure protection and is normally used together with an AC contactor. A motor protection circuit breaker (MPCB) combines overload protection, short-circuit protection, and manual switching functions in one device.
No. The JR36 is mainly designed for motor overload and phase failure protection. Additional short-circuit protection devices, such as fuses, MCBs, or MCCBs, should be installed according to the electrical system requirements.
The sealed design helps protect internal components from dust, moisture, and environmental factors. It improves the reliability and service life of the relay, making it suitable for demanding industrial applications.
Yes. The JR36 Sealed Electromagnetic Thermal Overload Relay is designed to work together with AC contactors to create a complete motor starter solution. This combination provides motor control and reliable overload protection.
The correct JR36 model should be selected according to the motor’s rated current, operating conditions, voltage, and application requirements. The overload setting should be adjusted close to the motor’s full-load current to provide effective protection.
The Westhomes JR36 provides reliable motor overload protection, a durable sealed structure, and stable performance in industrial environments. It is an effective solution for protecting motors, reducing downtime, and improving the safety of motor control systems.
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