Open Transition Automatic Transfer Switch

The ASCO SERIES 300 delivers compact, reliable, and user-friendly power transfer solutions with advanced monitoring and safety features for small businesses and industrial applications.

• Rugged Design: Built for small businesses and light industrial use, ensuring reliable power backup.
• Compact Installation: Space-saving design allows wall or floor mounting, with front-accessible cabling up to 2000A.
• Safe Power Transfer: True double-throw operation prevents simultaneous connections to two power sources.
• User-Friendly Interface: Easy-to-read graphical LCD with LED indicators for quick status monitoring and alerts.
• Versatile Power Range: Supports up to 600 VAC, single or three-phase, with models from 30 to 3000 amperes.
• Advanced Monitoring: Includes diagnostic tools, event logging, and historical tracking for enhanced oversight.
• Security Features: Password protection and adjustable delay to prevent unauthorized use and nuisance transfers.
• Comprehensive Accessories: Preconfigured models with relay expansion and programmable routines.
• Compliance and Warranty: RoHS compliant, UL 1008 certified, with a standard 2-year warranty and optional extensions.

Includes the following accessories installed:

11BE Feature Bundle:
Programmable engine exerciser with seven independent routines run the generator with or without loads, on a daily, weekly, bi-weekly, or monthly basis. Controlled from the user interface keypad.
• Event log display shows the event number, time and date, type and reason (if applicable).
• Stores up to 300 events
• RS485 Communication Port enabled common alarm output contact
• On three-phase systems, Accessory 11BE enables line-to-line voltage imbalance sensing and three-phase sensing capabilities for the Emergency power source as well as the Phase Rotation checking for both power sources.

18RX Relay Expansion Module:

Provides accessory relays and includes one Form C contact for normal source availability (18G), and one Form C contact for emergency source availability (18B) (contact rating 5 amperes @ 30 VDC or @ 125 VAC resistive) (100 ma, 4 VDC min) Additional output relay is provided the default is to indicate a common alarm.