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JR28 Thermal Overload Relay LRD LR2-D13 0.1A–25A

JR28 Thermal Overload Relay LRD LR2-D13 0.1A–25A

JR28 Thermal Overload Relay is used for AC motor overload protection in motor control circuits. It supports adjustable current settings, manual or automatic reset, test and stop buttons, and 1NO+1NC auxiliary contacts. Compatible with LRD and LR2-D13 type applications, it is suitable for pumps, fans, compressors, HVAC systems and industrial control panels.

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Key Features Technical Specifications Model Selection Reference FAQ

1. Motor Overload Protection

Protects motors from long-time overload operation and helps reduce motor burning risk.

2. Adjustable Current Setting

The rated current can be adjusted according to the motor operating current, making selection and installation more flexible.

3. Manual / Automatic Reset

Supports manual and automatic reset options for different control circuit requirements.

4. Test and Stop Button

Equipped with test and stop buttons for convenient maintenance and function checking.

5. NO / NC Auxiliary Contacts

Includes normally open and normally closed auxiliary contacts for control circuit connection.

6. Stable and Durable Structure

Compact structure with selected materials for stable operation and long service life.

7. Copper Conductive Pins

Pure copper pins provide better conductivity and more stable operation.

Item	Specification
Product Name	Thermal Overload Relay
Model	JR28
Compatible Type	LRD / LR2-D13
Rated Insulation Voltage	660V
Current Range	0.1A–25A
Common Frame Current	25A / 63A / 93A
Trip Class	10A
Protection Function	Motor overload protection
Reset Mode	Manual / Automatic reset
Contact Form	1NO + 1NC
Auxiliary Contact	95-96 NC, 97-98 NO
Standard	IEC60947-4-1 / GB14048.4
Application	AC motor protection, pump, fan, compressor, control panel

Model Range	Current Range	Suitable Application
JR28-25	0.1A–25A	Small and medium motor protection
JR28-63	25A–63A	Medium motor control systems
JR28-93	63A–93A	Larger motor control systems

Common JR28-25 current ranges include:

Model	Adjustable Current Range
JR28-25 0.1–0.16A	0.1–0.16A
JR28-25 0.16–0.25A	0.16–0.25A
JR28-25 0.25–0.4A	0.25–0.4A
JR28-25 0.4–0.63A	0.4–0.63A
JR28-25 0.63–1A	0.63–1A
JR28-25 1–1.6A	1–1.6A
JR28-25 1.6–2.5A	1.6–2.5A
JR28-25 2.5–4A	2.5–4A
JR28-25 4–6A	4–6A
JR28-25 5.5–8A	5.5–8A
JR28-25 7–10A	7–10A
JR28-25 9–13A	9–13A
JR28-25 12–18A	12–18A
JR28-25 17–25A	17–25A

Q1: What is the JR28 thermal overload relay used for?

A: It is used to protect AC motors from overload and long-time overcurrent operation.

Q2: Can it be used with CJX2 AC contactors?

A: Yes, it is commonly used together with CJX2 AC contactors for motor control circuits.

Q3: What current range is available?

A: JR28-25 supports adjustable current ranges from 0.1A to 25A.

Q4: Does it have auxiliary contacts?

A: Yes, it has 1 normally open and 1 normally closed auxiliary contact.

Q5: Does it support manual reset?

A: Yes, it supports manual and automatic reset options.

Q6: Is it a replacement for LRD or LR2-D13 type relays?

A: It can be used as a compatible replacement in many LRD and LR2-D13 thermal relay applications.

Q7: What applications is it suitable for?

A: It is suitable for pumps, fans, compressors, HVAC equipment, motor control cabinets and industrial machinery.

Q8: Can it be supplied together with AC contactors?

A: Yes, we can supply it together with CJX2 AC contactors as a complete motor control solution.

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