AutomationDirect UL 489 Miniature Circuit Breakers in single, double and triple pole series; low-cost.

  • September 14, 2010
  • AutomationDirect
  • AutomationDirect
AutomationDirect UL 489 Miniature Circuit Breakers in single, double and triple pole series; low-cost.
AutomationDirect UL 489 Miniature Circuit Breakers in single, double and triple pole series; low-cost.

WMZT circuit breakers are available with C and D curve thermal magnetic overcurrent protection characteristics. C-curve devices are suitable for applications where medium levels of inrush current are expected, such as small transformers, lighting, pilot devices and control circuits. D-curve devices provide protection from nuisance tripping where high levels of inrush current are expected, such as motors, transformers and power supplies. The series is also suitable for reverse-feed applications.

The series is DIN-rail mountable and features a tri-free design so the breaker cannot be defeated by hold the handle in the “ON” position. A selection of field-mountable accessories is also available, including auxiliary and alarm switches, shunt trip, lockout attachments and bus bar systems.Features:

  • UL 489 DIN rail mounted miniature circuit breakers up to 40 amp current rating
  • Complete family rated for 10 kAIC @ 277/480 VAC
  • Suitable for feeder and branch circuit device protection
  • Thermal magnetic overcurrent protection: two levels, categorized by C and D curves
  • C curve magnetic trip point: 5 to 10 times the rated current, typically used for small transformers, pilot devices, etc.
  • D curve magnetic trip point: 10 to 20 times the rated current, typically used for transformers or very high inductive loads.
  • Trip Free Design: Breaker cannot be defeated by holding the handle in the "ON" position.
  • Color coded status indicator window - Red = ON or Green = OFF
  • 35 mm DIN-rail mountable, utilizing spring clip
  • SWD (switching duty) Rated Circuit Breaker suitable for switching fluorescent lighting loads (In less than or equal to 20A)
  • Fulfills UL 489, CSA C22.2 No.5 and also IEC 60947-2 Standard
  • Can also be used in applications for which UL 1077 or CSA C22.2 No.235 are also allowed
  • Suitable for Reverse Feed applications
  • Field installable shunt trip and auxiliary switch subsequent mounting
  • Module width of only 17.7 mm (per pole)
AutomationDirect offers thousands of industrial automation products through its online superstore and 2,200-page catalog. Products include Programmable Logic Controllers (PLCs), AC drives/motors, operator interface panels/HMI, motor controls, DC power supplies, DC Motors, push buttons, sensors, NEMA electrical enclosures, wire duct, Pneumatic cylinders, and more. The company offers high-quality automation products at savings up to 50%, along with detailed documentation and superior sales and technical support. Same-day shipping on in-stock items ordered by 6 p.m. ET is standard. A 30-day, money-back guarantee is offered on most items, including software. Plus, orders over $300 receive free shipping. For more information, contact us at 1-800-633-0405 or visit www.automationdirect.com.

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