Modular backup automatic power switch for generators | uninterrupted power supply | DIN | 3P | 125A | 690V

Technical Specifications:
Input current (In): 125A
Number of poles: 3P 
Rated insulation voltage (Ui): 1500V
Impulse withstand voltage (Uimp): 8kV
Cable cross-section: up to 70 mm² (up to 95 mm² with adapters)
Short-time withstand current (1 sec., 400V): 3kA
Short-circuit making capacity (400V): 4.5kA
AC-23A/B: 415V: 125A; 500V: 125A; 690V: 125A
Electrical durability: 6,000 cycles
Mechanical durability: 10,000 cycles
Power loss per pole: 2.5W
Suitable for DIN rail (flat) mounting
Compatible with aluminum cables
Standards compliance: IEC 947-3; IEC 947-6; UL 60947-4-1; UL 60947-1
Certificates: UL (USA); EAC (Eurasian Customs Union); Lloyd’s Register (Marine); RINA (Marine & Engineering Certification)

Functions:
Automatic or manual load switching between two sources
Compatible with simple logic control schemes
DIN rail mountable (less than 18 cm)
Suitable for copper and aluminum cables
High switching capacity
Suitable for marine applications (vibration and corrosion resistant)

Applications:
Industrial buildings
Backup power systems
Marine electrical installations
Solar power plants and other renewable energy solutions
Automated power distribution systems

Pros:
Compact DIN rail-mounted design
High switching capacity (up to 690V, 125A)
Marine-compliant – Lloyd’s and RINA certified
UL and IEC certifications – international compliance
Long service life – up to 10,000 mechanical cycles
Suitable for copper and aluminum cables
Easy to operate and integrate

Cons:
Not suitable for applications requiring switching above 125A
Additional adapters needed for cables over 70 mm²
Integration with advanced PLC systems may require an external logic controller