Schneider EZ9C1263 Easy9 Series Overvoltage/Undervoltage Relay

1. 

   Schneider EZ9C1263 Easy9 Series Overvoltage/Undervoltage Relay

   모델 해석

1. 핵심 기술 매개변수

III. Core Functional Features

1. Dual Overvoltage/Undervoltage Protection

Overvoltage Protection: Automatically disconnects the circuit when voltage exceeds 275V (±10V) to prevent electrical appliances from being damaged by overvoltage.

Undervoltage Protection: Automatically disconnects the circuit when voltage is lower than 170V (±10V) to avoid burnout of motors and other equipment due to undervoltage overload.

Graded Time Delay: Automatically adjusts tripping time according to the degree of overvoltage/undervoltage to improve protection accuracy.

2. Automatic Reclosing Function

Automatically recloses after voltage returns to normal without manual intervention.

Maximum reclosing attempt limit (3 times) to prevent frequent reclosing when faults persist.

Reclosing interval is about 1 minute to ensure circuit stability before reconnection.

3. Safety Design Highlights

Fault Lockout: Automatically locks in the open position after 3 failed reclosing attempts, requiring manual reset.

Test Button: Manually tests whether the protection function is normal to ensure equipment reliability.

Arc-free Design: No arc ejection during breaking, improving operational safety.

Cooperative Operation with MCB: Must be installed downstream of MCB to utilize MCB for short-circuit and overload protection.

1. Installation and Application Key Points
2. 설치 요구 사항

Installation Location: Must be installed downstream of the miniature circuit breaker (MCB) as a secondary protection device.

Wiring Method: Strictly distinguish phase line (엘) and neutral line (N), with clear markings on wiring terminals.

Installation Direction: Vertically installed on 35mm standard DIN rail, with wiring available at both upper and lower ends.

Environmental Conditions: Install in a well-ventilated and dry place, avoiding humidity, dust and corrosive gases.

2. 응용 시나리오

3. Recommended Supporting Equipment

MCB Matching: It is recommended to use Schneider Easy9 series EZ9F53263 (2P 63A C-curve, breaking capacity 6kA).

Distribution Box: Easy9 series compact distribution box with IP43 protection class, suitable for rail mounting.

Wiring Terminals: Use copper lugs for connection to ensure good contact and reduce heating risk.

1. Selection and Alternative Solutions
2. Selection Key Points

Confirm circuit type: Only applicable to 230VAC single-phase circuits; other models should be selected for three-phase circuits.

Match load current: Rated current ≥ maximum load current; 63A is recommended for residential main protection.

Use with MCB: Must be used in conjunction with MCB and cannot be used alone as a circuit protection device.

2. Alternative Model Reference

1. Fault Diagnosis and Maintenance

요약

Schneider EZ9C1263 is an overvoltage/undervoltage relay specially designed for 230VAC single-phase circuits. Its core advantage lies in the automatic reclosing function, which can automatically restore power supply after voltage returns to normal, improving the convenience of electricity use. As a member of the Easy9 series, its compact design, DIN rail mounting and high reliability make it an ideal choice for protecting precision electronic equipment in residential and small-scale commercial buildings. It should be noted that this product is not a miniature circuit breaker and must be used in conjunction with MCB to achieve complete short-circuit, overload and voltage protection functions.