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Fuses, Circuit Breakers, and Overloads

Electric circuit protection is essential to protect wiring, equipment, and most importantly, personnel. As a matter of fact, proper selection and application of circuit protection is mandated by law. Fuses, circuit breakers and overloads are often the last resort protection. Choosing the correct device, applying the device properly, and guaranteeing that routine maintenance is conducted will ensure the protection is there when needed. Selected as the 2009 Product of the Year Award Winner by Plant Engineering Magazine.

Time Period Users Price
Web Based
Download Life of Computer
Installer Disc N/A
Each purchase allows a single user license
All sales are final. Prices subject to change.
System Requirements

Electrical Protective Devices
  • Short circuits vs. overloads
  • Symmetrical and asymmetrical fault current
Short Circuit Ratings
  • Short circuit calculation methods
  • Interactive calculator
Low Voltage Fuses
  • Fuse construction
  • Fuse class
  • UL classification of fuses
  • Time vs. current characteristics
  • I2t and device selectivity
Circuit Breakers
  • Overcurrent testing of circuit breakers
  • Replacing circuit breakers
  • Time vs. current characteristics
Low Voltage Metal Clad Switch Gear
  • Low voltage metal clad breaker checks
  • Infrared scanning
Motor Overload Protection
  • Motor losses and heating
  • Bimetallic overload relays
  • Solder-ratchet overload relays
  • Electronic overload relays
  • Ambient temperature correction
Sizing Motor Overload Heater Elements
  • Thermal overload protection
  • Testing overload protective devices
Fuses, Circuit Breakers, and Overloads

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Milford, CT 06460
phone: 203-783-1582
fax: 203-286-2188

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