Name: LR2-D23 Thermal Overload Relay - Geya Electrical Time
SKU: LR2-D23

Description

Product Overview

The GEYA LR2-D23 Thermal Overload Relay is a premium electrical protection device engineered for reliable AC motor overload and phase failure protection. Designed for 50Hz/60Hz circuits with voltages up to 660V and rated currents up to 40A, this thermal relay ensures optimal safety, prevents costly motor damage, and extends the longevity of your industrial motor control systems.

Key Advantages & Features

The LR2-D23 series is built for industrial durability and precision. It actively monitors motor current and safely interrupts the circuit during abnormal conditions.

Temperature Compensation: Maintains accurate tripping characteristics even when ambient temperatures fluctuate between -5°C and +40°C.
Phase Failure Protection: Rapidly detects phase loss (single-phasing) to prevent severe motor winding damage.
User-Friendly Interface: Features a clear release indication window, a test button for circuit verification, and selectable manual or automatic reset modes.
Seamless Integration: Perfectly matches with GLC1-25~32 and CJX2 series contactors for compact plug-in installation, or can be installed independently.

Normal Operating & Installation Conditions

Altitude: Not exceeding 2000m.
Ambient Temperature: -5°C to +40°C (Average temperature within 24 hours must not exceed +35°C).
Atmospheric Conditions: Relative humidity should not exceed 50% at +40°C. Higher humidity is permissible at lower temperatures (e.g., 90% at +25°C).
Mounting Inclination: The inclination of the mounting surface to the vertical must not exceed 5°.
Environment: Pollution class 3. Must be installed in non-explosive media free from corrosive gases, conductive dust, rain, and snow.

Attachment Description

Outline and Mounting Dimension

Parameter

Technical Item	LR2-D23 Parameter
Rated Operation Current A	36A (Standard) / Up to 40A
Rated Insulation Voltage V	690V
Phase Failure Protection	Yes
Manual & Automatic Reset	Yes
Temperature Compensation	Yes
Motion Indication & Test Button	Yes
Mounting Type	Plug-in / Independent type
Auxiliary Contacts	1NO + 1NC
AC-15 Rated Current (220V / 380V)	2.73A / 1.58A
DC-13 Rated Current (220V)	0.2A
Main Circuit Cross-Sectional Area	4~10 mm² (Terminal Screws: M4)
Auxiliary Circuit Cross-Sectional Area	0.5~2.5 mm² (Terminal Screws: M3.5)

Specification

Model	NO.	Rectification Current Range (A)	Fuse (A)		Matching Contactor Model
Model	NO.	Rectification Current Range (A)	aM	gG	Matching Contactor Model
LR2-D23	2353	23~32	40	63	GLC1-25~32
	2353X	28~36	40	63
	2355	30~40	40	80

Motion Characteristics

Action Time When Three-Phase Load is Balanced
No.	Rectification Current Multiplier	Motion Time	Starting Condition	Environmental Temp
1	1.05	> 2h	Cold state	20 ± 5°C
2	1.2	< 2h	Hot state (after test of No. 1)
3	1.5	< 4min	Hot state (after test of No. 1)
4	7.2	10A: 2s < Tp ≤ 10s 10: 4s < Tp ≤ 10s	Cold state

Frequently Asked Questions (FAQs)

1. What is the GEYA LR2-D23?

The GEYA LR2-D23 is an industrial-grade thermal overload relay specifically designed for AC circuits (50Hz/60Hz, up to 660V). It acts as a critical safety mechanism to protect AC motors from damage caused by sustained electrical overloads or phase failures.

2. What functions does it provide?

It provides comprehensive motor protection, including overload and phase break (failure) protection. It also features a built-in differential mechanism, temperature compensation to ensure accuracy across different climates, a release indicator, a test button, and selectable manual/automatic reset modes.

3. What are the key parameters affecting selection?

The most crucial parameter is the Rectification Current Range, which must align with your motor’s rated operational current. For the LR2-D23, this ranges from 23A to 40A. You must also ensure compatibility with your existing AC contactor (e.g., GLC1-25~32) and verify the circuit voltage.

4. What are the currently available options?

The LR2-D23 series offers three specific current specification codes: 2353 (23~32A), 2353X (28~36A), and 2355 (30~40A). You can also choose between plugging it directly into a matching contactor or mounting it independently.

5. What standards does it comply with and which markets is it designed for?

The LR2-D23 fully conforms to the international IEC60947-4 standard and the Chinese GB14048.4 standard. It is engineered for the global industrial automation, HVAC, manufacturing, and general motor control markets.

6. What are the installation precautions?

For optimal performance, ensure the installation altitude is below 2000m and the ambient temperature is between -5°C and +40°C. The vertical mounting inclination must not exceed 5°. Additionally, install the relay in a non-explosive environment free from corrosive gases, conductive dust, severe vibrations, and direct exposure to rain or snow.

LR2-D23 Thermal Overload Relay