1. はじめに
This manual provides essential information for the safe and effective use of the Finder 40.31.9.024.0000 SPDT (Single Pole Double Throw) Electromechanical Relay. This relay is designed for general-purpose power switching applications, featuring a 24VDC coil and a 10A contact rating at 250VAC. It is suitable for through-hole mounting in various industrial and electronic circuits.
2. 安全情報
警告: Electrical components can cause electric shock or fire if not handled correctly. Always observe the following safety precautions:
- 設置、配線、またはメンテナンスを行う前に、電源が切断されていることを確認してください。
- 設置は有資格者のみが行ってください。
- 配線図に従って、すべての接続が安全かつ正しいことを確認します。
- 指定された容量を超えないでくださいtagリレーの定格電流と電流定格。
- リレーを湿気、ほこり、極端な温度から保護してください。
- This product is RoHS compliant. Dispose of it according to local regulations at the end of its life cycle.
3.製品オーバーview
The Finder 40.31.9.024.0000 is a compact electromechanical relay from the 40 Series, designed for reliable switching in various control circuits. It features a single pole double throw (SPDT) contact configuration, allowing it to switch between two circuits. The relay operates with a 24VDC coil and can handle up to 10 Amps at 250VAC. Its through-hole mounting design makes it suitable for PCB integration.

図3.1: 前面 view of the Finder 40.31.9.024.0000 SPDT Relay. This image shows the general appearance of the relay, typically a rectangular housing with pins extending from the bottom for PCB mounting.
4. Technical Diagrams and Dimensions
Understanding the physical dimensions and pin configuration is crucial for proper installation and integration into your circuit board. The following diagram illustrates the relay's footprint, pin spacing, and overall dimensions.

Figure 4.1: Technical drawing showing the dimensions and pinout of the Finder 40.31.9.024.0000 relay. The top-left diagram shows the bottom view with pin spacing (e.g., 3.5mm, 7.5mm, 20mm, 6mm). The top-right diagram illustrates the internal schematic with coil terminals A1, A2 and contact terminals 11 (common), 12 (normally closed), 14 (normally open). The bottom diagrams provide side and front views with overall dimensions (e.g., 29mm length, 25mm height, 12.4mm width, 0.4mm and 1mm pin thickness).
5. インストール
The Finder 40.31.9.024.0000 relay is designed for through-hole mounting on a Printed Circuit Board (PCB). Follow these steps for proper installation:
- PCB を準備します。 Ensure the PCB has correctly sized holes and pad layouts matching the relay's pin configuration as shown in Figure 4.1.
- Insert the Relay: Carefully align the relay pins with the corresponding holes on the PCB. Ensure the relay is oriented correctly.
- はんだ接続: Solder each pin to its respective pad on the PCB. Use appropriate soldering techniques to ensure strong, reliable electrical and mechanical connections. The relay terminals are designed for soldering.
- コイル接続: Connect the 24VDC power supply to the coil terminals A1 and A2. Polarity is typically indicated on the relay or in the schematic (A1 positive, A2 negative for DC coils, but check specific markings).
- Contact Connections: Connect the load circuits to the contact terminals:
- ターミナル11: 共通の連絡先。
- ターミナル12: Normally Closed (NC) contact. This contact is closed when the coil is de-energized.
- ターミナル14: Normally Open (NO) contact. This contact is closed when the coil is energized.
- インストールの確認: After soldering, visually inspect all connections for shorts, cold solder joints, or other defects.
6. 操作
The Finder 40.31.9.024.0000 relay operates by energizing its 24VDC coil. When the coil is energized, an electromagnetic field is created, which pulls the armature, causing the common contact (11) to switch from the Normally Closed (12) position to the Normally Open (14) position. When the coil is de-energized, the armature returns to its original state, and the common contact (11) reconnects with the Normally Closed (12) contact.
- コイル巻tage: Apply 24VDC to terminals A1 and A2 to activate the relay.
- コンタクトスイッチング: The relay provides a mechanical switch action, isolating the control circuit (coil) from the load circuit (contacts).
- 耐荷重: Ensure the switched load does not exceed 10 Amps at 250VAC. Exceeding these limits can damage the relay and connected equipment.
7. メンテナンス
The Finder 40.31.9.024.0000 relay is a sealed component and generally requires minimal maintenance. However, periodic inspection can help ensure its longevity and reliable operation:
- 目視検査: Regularly check for any signs of physical damage, discoloration, or overheating on the relay body and terminals.
- 環境条件: Ensure the operating environment remains within specified temperature and humidity ranges. Protect the relay from excessive dust or corrosive atmospheres.
- 接続の整合性: Periodically verify that all soldered connections remain secure and free from corrosion.
- クリーニング: 必要に応じて、リレーの外側を乾いた柔らかい布で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。
8。 トラブルシューティング
リレーが期待どおりに機能しない場合は、次のトラブルシューティング手順を検討してください。
- リレーが作動しない:
- Check if the correct 24VDC is applied to coil terminals A1 and A2.
- Verify coil current (nominal 27mA).
- Inspect for open circuits in the coil wiring.
- 電源が正しく機能していることを確認してください。
- 負荷が切り替わらない:
- Confirm the relay coil is activating (a faint click might be audible).
- Check continuity across the contact terminals (11-12 and 11-14) when the coil is energized and de-energized.
- Verify that the load circuit is correctly wired to the common (11) and desired NO (14) or NC (12) contacts.
- Ensure the load current and voltage do not exceed the relay's contact ratings.
- 過熱:
- This indicates excessive current or voltage. Immediately disconnect power.
- Recheck all circuit parameters against the relay's specifications.
If issues persist after troubleshooting, consider replacing the relay or consulting a qualified technician.
9. 仕様
The following table summarizes the key electrical and mechanical specifications for the Finder 40.31.9.024.0000 relay. For detailed performance curves and additional characteristics, refer to the manufacturer's full datasheet (Figure 9.1 provides an overview of such data).

図9.1:以上view of Finder 40.31.9.024.0000 Relay Characteristics. This image displays several tables and graphs, including general characteristics (insulation, immunity), contact characteristics (current vs. operations, current vs. DC voltage), and detailed coil characteristics for DC, AC, and AC/DC versions, showing nominal voltage, resistance, and power consumption.
| パラメータ | 価値 |
|---|---|
| モデル番号 | 40.31.9.024.0000 |
| 連絡先の設定 | SPDT(単極双投) |
| コイル巻tage | 24VDC |
| コイル電流 | 27mA |
| コイル抵抗 | 900オーム |
| 接触電流定格 | 10 Amps |
| 最大スイッチング電流 | 10 Amps (20A peak) |
| お問い合わせVoltagVAC | 250VAC |
| 連絡先 | 銀ニッケル |
| 取り付けタイプ | Through Hole (PCB Mount) |
| 中継端子 | 半田 |
| External Depth | 29ミリメートル |
| External Height | 25ミリメートル |
| 外幅 | 12.4ミリメートル |
| Nominal Operating Power | 650mW |
| RoHS準拠 | はい |
| アイテム重量 | 0.01オンス(約0.28グラム) |
10. 保証とサポート
This Finder relay is manufactured to high-quality standards. For specific warranty information, please refer to the terms and conditions provided by your point of purchase or contact Finder directly. Technical support and further documentation can typically be found on the official Finder webサイトまたは正規販売代理店を通じて購入できます。