Eaton Moeller
FAZ UL 1077
Supplementary Circuit Breakers
Product Overview

Optimum and Efficient Protection

FAZ UL 489 Circuit Preaker Family

Optimum product quality, tested reliability and safety stand for best protection of personnel, installations and plant. Eaton’s FAZ DIN rail mountable circuit breaker is designed for use in control panel applications.

Typical Applications - Supplementary Protection

  • - Control circuits
  • - Lighting
  • - Business equipment
  • - Appliances


  • - Complete range of UL 1077 recognized DIN rail mounted miniature circuit breakers up to 63A current rating
  • - Standard ratings of 10 kAIC up to 277/480 Vac
  • - Current limiting design provides fast short-circuit interruption that reduces the let-through energy, which can damage the circuit
  • - Suitable for supplementary protection
  • - Thermal-magnetic overcurrent protection
  • - Six levels of short-circuit protection, categorized by B, C, D, K, S, and Z curves
  • - Trip-free design—breaker can not be defeated by holding the handle in the ON position
  • - Captive screws cannot be lost
  • - Fulfill UL 1077, CSA C22.2 No.235 and also IEC 60947-2 Standard
  • - Field-installable shunt trip and auxiliary switch subsequent mounting
  • - Module width of only 17.7 mm (per pole)
  • - Contact position indicator (red/green)
  • - Easy installation on DIN rail
  • - Possibility for sealing the toggle in ON or OFF position

Standards and Certifications

FAZ-NA complies with the latest national and international standards.

  • UL 1077, CSA C22.2 No. 235
  • - Apply to supplementary protectors intended for use as overcurrent, or overvoltage or undervoltage protection within an appliance or other electrical equipment where branch circuit protection is already provided, or is not required
  • RoHS compliant
  • VDE compliant
  • - Devices with B, C, and D curves are VDE compliant
  • CCC
  • - Devices with B, C, and D curves are CCC compliant
  • ABS compliant
FAZ 489 Circuit Breakers Standards & Certifications

Tripping Curves to Choose From

Six Tripping Curves to Choose From

Eaton FAZ supplementary protectors are available with six different tripping characteristics, including Type B, C, D, K, S, and Z. Definitions for each trip curve are contained on the ordering pages and can be used to determine the optimal characteristic for your application. For example, low-level short-circuit faults in control wiring, such as PLCs, are best protected by devices with Type B trip characteristics (3–5X continuous rating of the device (In).

Even though not required by NEC or CEC for supplementary protectors, Eaton’s FAZ devices are current limiting, which means that they interrupt fault currents within one half cycle. Current limiting devices offer superior protection by reducing peak let-through current and energy.

FAZ UL 1077 Supplementary Circuit Breakers Trip Curve Diagram

Part Number Selection Guide

UL 489 DIN rail branch circuit breakers part number selection guide

Let our expert sales staff guide you through finding the right products to fit your needs. CALL 866-595-9616.