GE SFLA36AT0250 3P-600V-250A Circuit Breaker Instruction Manual

1. はじめに

This manual provides comprehensive instructions for the safe installation, operation, and maintenance of the GE SFLA36AT0250 3-pole, 600V, 250A Circuit Breaker. This device is designed to protect electrical circuits from overcurrents, which can result from overloads or short circuits. Proper understanding and adherence to these instructions are crucial for ensuring the safety of personnel and the longevity of the equipment. This circuit breaker is intended for use in industrial and commercial electrical distribution systems.

Figure 1: The GE SFLA36AT0250 3-pole, 250A circuit breaker.

2. 安全情報

警告： 感電の危険があります。この機器の設置、操作、またはメンテナンスは、必ず資格のある担当者にお任せください。指示に従わない場合、重傷または死亡につながる可能性があります。

• Always disconnect and lock out all power sources before working on or near the circuit breaker.
• Use appropriate personal protective equipment (PPE), including insulated gloves, eye protection, and arc-flash rated clothing.
• 回路ブレーカーの定格（voltage, current, poles) match the system requirements.
• Ensure all connections are tight and properly torqued according to manufacturer specifications.
• Do not operate a damaged circuit breaker. Inspect for any physical damage before installation and operation.
• 地域および国の電気に関するすべての規定と基準を遵守してください。

3. パッケージ内容

Carefully unpack the circuit breaker and inspect for any shipping damage. Retain all packaging materials until the unit is confirmed to be in working order. The package should contain the following:

• One (1) GE SFLA36AT0250 3P-600V-250A Circuit Breaker
• 取扱説明書（本書）

Figure 2: Shipping box for the GE Industrial Systems circuit breaker.

Figure 3: Product label detailing the SFLA36AT0250 circuit breaker specifications. Catalog Number: SFJ11284M0309, UPC Number: 0783164211597.

4. セットアップとインストール

Installation of this circuit breaker must be performed by a qualified electrician in accordance with all applicable electrical codes and safety standards.

1. 準備： Ensure all power to the installation area is disconnected and verified de-energized using appropriate testing equipment. Apply lockout/tag手順を説明します。
2. 取り付け: Mount the circuit breaker securely within the designated panelboard or enclosure. Refer to the panelboard manufacturer's instructions for specific mounting hardware and procedures.
3. 配線： Connect the load and line conductors to the appropriate terminals on the circuit breaker. Ensure proper wire gauge is used for the 250A rating. Torque all terminal screws to the values specified by GE, typically found on the device label or in supplementary documentation.
4. 検証： すべての接続がしっかりと締め付けられ、極性が正しいことを再確認してください。緩んだ配線やゴミがないことを確認してください。
5. エンクロージャの閉鎖: Securely close the panelboard or enclosure cover.
6. 電力の回復: ロックアウトを解除/tagout devices and carefully restore power to the system. Observe the circuit breaker for any unusual behavior.

5. 操作手順

The GE SFLA36AT0250 circuit breaker is designed for automatic operation, tripping when an overcurrent condition occurs. Manual operation is also possible.

• オンの位置： To close the circuit and allow current flow, push the handle firmly to the 'ON' position.
• オフ位置： To open the circuit and stop current flow, push the handle firmly to the 'OFF' position.
• トリップ位置: If an overcurrent condition occurs, the circuit breaker will automatically move to a 'TRIPPED' position (often midway between ON and OFF, or a distinct indicator).
• 落ちたブレーカーをリセットする: To reset a tripped breaker, first move the handle completely to the 'OFF' position, then push it firmly to the 'ON' position. If the breaker immediately trips again, do not force it. Investigate and resolve the cause of the overcurrent before attempting another reset.

6. メンテナンス

Regular maintenance helps ensure the reliable operation and longevity of your circuit breaker. All maintenance should be performed by qualified personnel with power disconnected and locked out.

• 目視検査（毎年） Inspect the circuit breaker for any signs of physical damage, discoloration, overheating, or loose connections. Check for dust or debris accumulation.
• クリーニング： 必要に応じて、乾いた糸くずの出ない布で回路ブレーカーの外側を優しく拭いてください。溶剤や研磨剤は使用しないでください。
• Connection Check (Periodically): Verify that all electrical connections are tight and torqued to specifications. Loose connections can lead to overheating and potential failure.
• Functional Test (As required by standards): Periodically test the trip mechanism according to industry standards or manufacturer recommendations. This typically involves specialized test equipment.

7。 トラブルシューティング

If you encounter issues with your GE SFLA36AT0250 circuit breaker, refer to the following table. Always ensure power is disconnected before investigating electrical issues.

8. 仕様

Key technical specifications for the GE SFLA36AT0250 Circuit Breaker:

9. 保証とサポート

保証： This GE SFLA36AT0250 Circuit Breaker comes with a 1-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use and service. Please retain your proof of purchase for warranty claims.

テクニカルサポート： For technical assistance, troubleshooting beyond the scope of this manual, or warranty inquiries, please contact your authorized GE distributor or visit the official GE Industrial Systems website. Provide the model number (GESFLA36AT0250) and serial number (if applicable) when seeking support.