Eaton SPS-620 User Manual

User Manual MN013016EN
Effective July 2022
Supersedes January 2022
Magnum PXR and Power Defense SB low
voltage power circuit breakers user manual
For use in ANSI/UL applications
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Eaton SPS-620 Specifications

General

Amperage Rating	20A
Number of Poles	2
Interrupting Capacity	10 kA
Rated Current	20 A
Breaking Capacity	10 kA
Voltage Rating	120/240 VAC
Trip Type	Thermal-magnetic

Summary

Safety Features and Practices

Section 2: Receiving, Handling, and Installation

Installing the Drawout Circuit Breaker

Rejection Interlocks

Operating Mechanism

Anti-Pump Feature

Electronic Tripping System

Microprocessor-Based Trip Unit

Details the features and flexibility of the PXR trip unit.

Making Current Release and Voltage Taps

Accessory Devices

Plug-in Electrical Accessories

Lists shunt trip, spring release, UVR, and auxiliary switches.

Shunt Trip and Spring Release

Explains the function and types of shunt trips and spring releases.

Undervoltage Release

Auxiliary Switch

Motor Operator and Internal Accessories

IP55 Waterproof Cover and Mechanical Interlock

Section 7: Importance of Maintenance

Safety Precautions

Warns about risks of neglecting inspection, cleaning, and maintenance.

Functional Tests

Manual Operation Functional Test

Details the procedure for testing manual breaker operations.

Electrical Operation Functional Test

Trip Unit Overload Functional Test

Maintenance Schedule and Frequency Adjustment

Inspection Procedures: Arc Chute

Primary Contact Inspection

Internal Mechanism Inspection

Primary Disconnect Inspection

Secondary Disconnect Inspection

Interlocks Inspection

Troubleshooting: Spring Charging and Contact Closing

Troubleshooting: Contact Opening and Levering