1. Úvod
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Citel MSB10-400 AC Surge Protector. Please read these instructions carefully before installation or use and retain them for future reference.
1.1 Bezpečnostné informácie
WARNING: Electrical shock hazard. Installation and servicing must be performed by qualified personnel only. Disconnect power before installation or maintenance.
- Vždy dodržiavajte miestne a národné elektrické predpisy.
- Ensure the power supply is disconnected before working on the electrical system.
- Neinštalujte toto zariadenie vo vlhkom aleboamp miestach, pokiaľ nie sú na takéto prostredie špeciálne určené.
- Overte si objtage and current ratings of the surge protector match your application.
2. Produkt skončilview
The Citel MSB10-400 is a Type 2 AC Surge Protective Device (SPD) designed to protect electrical equipment from transient overvoltages caused by lightning strikes and switching events. It is a hardwired device suitable for installation at the service entrance or downstream panels.
2.1 Kľúčové vlastnosti
- 3kA nominal discharge current (In)
- Hardwire installation for robust protection
- Určené pre 277V AC systémy
- Maximálny nepretržitý prevádzkový objemtage (MCOV) of 300VAC
- Visual status indicator for easy monitoring
2.2 Komponenty
The MSB10-400 unit consists of a compact enclosure with integrated wiring leads for connection to the electrical system. It includes a visual indicator to show operational status.

3. Nastavenie a inštalácia
Inštaláciu musí vykonať kvalifikovaný elektrikár v súlade so všetkými platnými elektrotechnickými predpismi.
3.1 Kontroly pred inštaláciou
- Confirm the supply voltage matches the surge protector's rating (277V AC).
- Ensure adequate space for mounting and wiring.
- Verify that the electrical panel or equipment to be protected is de-energized.
3.2 Pokyny na zapojenie
- Mount the MSB10-400 unit securely to a suitable surface near the electrical panel or equipment to be protected.
- Connect the Line (L/N) wires from the surge protector to the corresponding Line (L) or Neutral (N) terminals in the electrical panel. The device is designed for 277V systems, typically connected Line-to-Neutral or Line-to-Line depending on the system configuration. Refer to the diagram on the unit for specific L/N connections.
- Connect the Ground wire (green/yellow) from the surge protector to the main grounding bus bar in the electrical panel.
- Uistite sa, že všetky pripojenia sú pevné a bezpečné.
- Once wiring is complete, restore power to the system.

4. Princípy fungovania
The Citel MSB10-400 operates passively, continuously monitoring the electrical lines for transient overvoltages. When a surge occurs, the device diverts the excess energy safely to ground, protecting connected equipment.
4.1 Indikátor stavu
The surge protector features a visual indicator. When the device is functioning correctly, the indicator will be in its normal state (typically a visible 'ON' or clear window). If the indicator shows 'OFF: replace', it signifies that the internal protection components have been consumed by a significant surge event, and the unit requires replacement to maintain protection.
5. Údržba
The Citel MSB10-400 is designed for minimal maintenance. Regular inspection is recommended to ensure continued protection.
5.1 Kontrola
- Periodically check the visual status indicator. If it shows 'OFF: replace', the unit must be replaced.
- Inspect the wiring connections for any signs of damage, corrosion, or loosening.
- Ensure the unit's enclosure is free from physical damage.
No user-serviceable parts are inside. Do not attempt to open or repair the unit.
6. Riešenie problémov
Most issues related to the surge protector involve its operational status.
| Problém | Možná príčina | Riešenie |
|---|---|---|
| Status indicator shows 'OFF: replace' | The surge protector has absorbed a significant surge and is no longer providing protection. | Replace the Citel MSB10-400 unit immediately. |
| No power to protected equipment | This device does not interrupt power. Check circuit breaker, wiring, and equipment power supply. | Verify power supply to the electrical panel and the protected equipment. Consult a qualified electrician if issues persist. |
7. Technické špecifikácie
| Špecifikácia | Hodnota |
|---|---|
| Číslo modelu | MSB10-400 |
| Nominálny objemtage | 277 V - 60 Hz |
| Max. Continuous Operating Voltage (MCOV) | 300 VAC |
| Nominálny vybíjací prúd (In) | 3 kA |
| Surge Voltage Rating (VPR) L-N | 1200 V |
| Surge Voltage Rating (VPR) L-G | 1200 V |
| Surge Voltage Rating (VPR) N-G | 1000 V |
| IEC Max. Discharge Current (Imax) | 10 kA |
| Hmotnosť položky | 3.2 uncí |
| Rozmery produktu | 2.5 x 2.5 x 1.5 palca |
| Zdroj napájania | Drôtové elektrické |
| Farba | Biela |
| Výrobca | Citel |
8. Záruka a podpora
8.1 Informácie o záruke
Specific warranty details for the Citel MSB10-400 AC Surge Protector are typically provided at the point of purchase or on the manufacturer's official website. Please refer to your purchase documentation or contact Citel directly for comprehensive warranty terms and conditions.
8.2 Zákaznícka podpora
For technical assistance, installation queries, or warranty claims, please contact Citel customer support through their official webstránku alebo kontaktné informácie uvedené v dokumentácii k produktu.