Description
GDSM-125-4P Automatic Transfer Switch Overview
Le GDSM-125-4P automatic transfer switch is a moulded-case dual power transfer switch designed for AC power systems requiring controlled changeover between normal and standby power sources. As a CB-class automatic transfer switch, it combines dual-power switching with a robust moulded-case structure suitable for commercial, industrial and equipment-control applications.
The GDSM-125-4P uses a 125A shell frame and provides rated current options of 25A, 32A, 40A, 50A, 63A, 80A, 100A and 125A. The 4-pole configuration allows switching of three phase conductors together with the neutral conductor, making it suitable for three-phase four-wire electrical systems.
Rated operating voltage is AC400V 50Hz, while the rated insulation voltage reaches AC800V. An 8kV impulse withstand voltage provides additional insulation capability for demanding low-voltage distribution environments.
Le GDSM-125-4P automatic transfer switch supports both automatic and manual operation. Front-panel indicators provide visual information for power and switch operating states, helping installers and maintenance personnel identify the status of normal and standby sources.
With a rated switching time of approximately 0.3 seconds, the GDSM-125-4P provides fast changeover for applications where continued electrical supply is important.
Caractéristiques techniques
| Paramètre | Caractéristiques techniques |
|---|---|
| Marque | GA&DA |
| Modèle | GDSM-125-4P |
| Type de produit | Moulded Case Automatic Transfer Switch |
| Cours d'électricité | Classe CB |
| Shell Frame Current | 125A |
| Courant nominal | 25A / 32A / 40A / 50A / 63A / 80A / 100A / 125A |
| Pole | 4P |
| Rated Operating Voltage Ue | CA 400 V |
| Fréquence nominale | 50Hz |
| Tension nominale d'isolation Ui | AC800V |
| Rated Impulse Withstand Voltage Uimp | 8kV |
| Use Category | AC-33iB |
| Electrical Level | Classe CB |
| Niveau de protection | IP30 |
| Mechanical / Operating Life | 6000 operations |
| Rated Control Supply Voltage Us | AC230V 50Hz |
| Switching Time | 0.3s |
| Operation Mode | Automatic / Manual |
| Demande | Commutation double alimentation : mode normal / veille |
Applications
Le GDSM-125-4P automatic transfer switch is suitable for dual-power installations requiring higher current capacity and four-pole switching.
Parmi les applications courantes, on peut citer :
- Commercial building distribution systems
- Industrial control panels
- Factory power distribution
- Generator and mains changeover
- Systèmes d'alimentation de secours
- HVAC power supply systems
- Data and communication equipment rooms
- Machinery power control
- OEM electrical cabinets
- Three-phase four-wire distribution systems
Its 125A frame and CB-class construction make it particularly suitable for installations requiring a more substantial transfer-switch structure than compact modular ATS products.
Why Choose GA&DA GDSM-125-4P?
Le GDSM-125-4P automatic transfer switch combines high-current dual-power switching with a moulded-case CB-class design.
Parmi les principaux avantages, on peut citer :
- 25A–125A rated current range
- 4-pole switching
- AC400V operating voltage
- AC800V insulation voltage
- 8kV impulse withstand voltage
- AC-33iB utilization category
- Automatic and manual control
- 0.3s switching time
- IP30 protection level
- Clear operating status indication
- 6000-operation life
- Suitable for OEM and project purchasing
For panel builders, electrical contractors and industrial distributors, the GDSM-125-4P provides a practical dual-power switching solution for medium-capacity three-phase systems.
FAQ
What current ratings are available for the GDSM-125-4P?
The GDSM-125-4P automatic transfer switch is available in 25A, 32A, 40A, 50A, 63A, 80A, 100A and 125A.
Is the GDSM-125-4P a CB-class ATS?
Yes. The GDSM series is designed as a CB Class moulded case dual power transfer switch.
What voltage does the GDSM-125-4P support?
The rated operating voltage is AC400V at 50Hz.
What is the switching time?
The specified switching time is approximately 0.3 seconds.
Does the GDSM-125-4P support manual operation?
Yes. The switch supports automatic and manual operation.
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