Percentage

Littelfuse delivers vital products to address customer needs for protection, safe control, and optimal distribution of electrical power in industrial applications. The Single Function and Control Relays product portfolio includes percentage, time-delay relays that deliver on those needs with advanced technology and proven reliability. The PTHF and KSPSA series relays provide superior protection with excellent repeat accuracy and demonstrated stability. These relays feature microcontroller-based circuitry, solid-state components, and are fully encapsulated to protect against shock, vibration, and humidity.