Product
Thermal Overload Relay JR28-25(LR2-D13)1-1.6A - KAYAMA
Kayama JR28-25 LR2-D13 Thermal Overload Relay with 1–1.6 A adjustable current range for motor protection
The Kayama JR28-25 LR2-D13 Thermal Overload Relay is designed to protect electric motors against prolonged overload conditions, with an adjustable current range of 1 to 1.6 A. It features manual and automatic reset, according to the stated configuration, and can be integrated into motor control circuits with properly sized contactors and protection devices.
- SKU
- 07130001
- Category
- Thermal
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Technical Description
The Kayama JR28-25 (LR2-D13) Thermal Overload Relay is designed to protect electric motors against prolonged overload conditions.
Its stated adjustable current range is 1 to 1.6 A, allowing the relay to be set according to the motor rated current when that current falls within the specified range.
Technical Characteristics
- Brand: Kayama
- Model: JR28-25
- Reference: LR2-D13
- Type: Thermal overload relay
- Adjustable current range: 1 to 1.6 A
- Application: motor protection against prolonged overload
- Operating principle: thermal
- Reset: manual and automatic, according to the supplied information
- Mounting: contactor coupling or DIN rail configuration depending on version/accessory
Overload Protection
The JR28-25 is designed to identify conditions where the motor remains above its adjusted current level for a period consistent with the relay's thermal operating characteristic.
When an overload persists, the relay can act on the control circuit to assist in stopping the motor.
Adjustable 1–1.6 A Range
The 1 to 1.6 A range should be adjusted according to the motor's actual rated current and the electrical design.
Motor power alone should not be used to determine the relay setting.
Thermal Operating Principle
Thermal overload relays use current-related heating to detect prolonged overload conditions.
When the thermal effect reaches the relay's operating threshold, the device trips and changes the state of its auxiliary contacts.
Contactor Integration
The JR28-25 may be integrated with a compatible contactor.
Compatibility must be confirmed according to the exact contactor model, mechanical arrangement and electrical characteristics.
Manual and Automatic Reset
The available product information states manual and automatic reset capability.
Automatic reset should only be used where the control and safety system prevents hazardous unexpected restarting.
Short-Circuit Protection
The thermal overload relay does not replace short-circuit protection.
Circuit breakers, fuses or other suitable protective devices must be provided according to the electrical design.
Trip Class
The trip class has not been objectively specified in the available information.
A class such as 10A, 10, 20 or 30 should not be assigned without specific technical documentation.
Installation and Safety
Installation must be performed by qualified personnel.
Before energizing, verify motor rated current, relay adjustment, contactor compatibility, short-circuit protection and control-circuit wiring.
Registration Information
- Brand: Kayama
- Model: JR28-25
- Reference: LR2-D13
- Current range: 1–1.6 A
- Type: Thermal overload relay
- Stated reset: manual and automatic
Kayama Quality
The Kayama JR28-25 LR2-D13 Thermal Overload Relay is part of Kayama's professional range for motor control and protection.
The Kayama JR28-25 LR2-D13 1–1.6 A Thermal Overload Relay can be used in motor control and protection systems where the motor rated current is compatible with its adjustment range.
- Electric motors — protection against prolonged overload conditions within the appropriate current range.
- Pumps — can be integrated into compatible pumping-system motor protection.
- Fans — assists in protecting motors against prolonged overcurrent.
- Exhaust systems — can act within the control circuit under overload conditions.
- Compressors — can be integrated into compatible motor protection systems.
- Industrial machinery — can form part of the protection circuit for machine motors.
- Small motorized systems — suitable where motor rated current falls within 1–1.6 A.
- Control panels — can be integrated with contactors and associated protection devices.
- Automated systems — can provide a trip condition to the control circuit after an overload.
- Motor starting assemblies — can be used with short-circuit protection, contactor and motor in properly designed systems.
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