ASCO Series 300 Automatic Transfer Switches

Operator's Manual

This document serves as the Operator's Manual for the ASCO Series 300 Automatic Transfer Switches (ATS), designed for reliable operation in emergency and standby power systems. Available in sizes ranging from 30 through 400 amperes, these switches are built to meet stringent safety and performance standards.

The Series 300 ATS is listed under Underwriters Laboratories (UL 1008) and CSA C22.2 No. 178 standards, ensuring compliance with OSHA safety requirements and acceptance by electrical inspectors. They are suitable for applications defined by the National Electrical Code (NEC) and NFPA standards, including health care facilities and legally required standby systems.

Key Information & Guidance

This manual provides essential guidance for the proper installation, sequence of operation, testing, service, adjustments, and control features of the ASCO Series 300 ATS. It includes detailed explanations of catalog number identification, safety warnings, and operational procedures.

Installation: Requires a qualified, licensed electrician. The manual outlines foundation requirements, mounting procedures, and line connection guidelines, emphasizing safety precautions.

Operation & Testing: Details the sequence of operation for transferring loads between normal and emergency power sources, along with functional tests to verify correct operation.

Maintenance & Adjustments: Covers preventive maintenance, troubleshooting common issues, and adjusting control settings for optimal performance.

Support & Resources

For detailed installation drawings, wiring diagrams, or further technical support, refer to the documentation provided with your specific ASCO Series 300 ATS unit.

For inquiries or service, ASCO Power Technologies can be contacted via:

Visit the official ASCO website at www.asco.com for additional resources.

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