AF0100 Series - Arc-Flash Relay

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The AF0100 Series arc-flash relay is a cost-effective solution that reduces arc-fault damage by detecting the light from an arc flash and rapidly tripping. Two remote light sensors can be connected to one relay and multiple AF0100 and/or AF0500 relays can be connected to monitor additional sensors, providing complete coverage for a wide range of applications. The compact, DIN-rail or surface-mountable body makes this an ideal solution for equipment manufacturers.

Two isolated Form-C contacts are provided for applications with multiple devices that must be tripped. This is especially useful for generator applications where the generator and breaker need to be tripped in case of an arc flash. The AF0100 accepts PGA-LS10 point sensors and PGA-LS20/ PGA-LS30 fiber-optic sensors in any combination. Sensor health is continuously monitored to ensure fail-safe operation. A solid-state redundant trip circuit provides an internal fail-safe mechanism and fast arc-flash response during power up. Front-panel and sensor LEDs indicate sensor health and fault location.

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Relay Contacts ConfigRelay
Voltage (V)
DimensionsWeight (lbs/g)Digital InputsSensitivity (Ohms)SamplesCompare
AF0100-00100 - 24024 - 48; 100 - 2402 6A Form C (NO/NC) Trip; 1 6A Form C HealthFail-safe / Non Fail-safe100-240 Vac/Vdc, 24-48 Vdc3.5 H x 5 W x 2.4 D in. (90 x 128 x 60 mm)0 Kg210-25 klux programmableOrder
AF0100-1024 - 482 6A Form C (NO/NC) Trip; 1 6A Form C HealthFail-safe / Non Fail-safe24-48 Vdc3.5 H x 5 W x 2.4 D in. (90 x 128 x 60 mm)0 Kg210-25 klux programmableOrder

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