Phoenix Contact offers a full family of modular components covering virtually all of your industrial electrical and electronic needs as well as a broad range of value-added services. CLIPLINE DIN rail-mount terminal blocks Marking materials and printers Tools Ferrules TRABTECH Surge voltage protection INTERFACE Analog signal converters PLC cabling Power supplies Rail-mount breakout modules Relays Intrinsic safety modules COMBICON PCB terminal blocks Electronic component housings PLUSCON Industrial plug connectors Sensor cabling and sensor boxes AUTOMATIONWORX Solutions, products and services Controllers and software for DeviceNet, Pro bus, Ethernet Fieldbus I/O and Interbus Ethernet infrastructure components Canada USA PHOENIX CONTACT Ltd. PHOENIX CONTACT 235 Watline Avenue P.O. Box 4100 Mississauga, Ontario L4Z 1P3 Harrisburg, PA 17111-0100 Phone: 905-890-2820 Phone: 800-888-7388 Circuit Breakers Technical Service: 800-890-2820 717-944-1300 Fax: 905-890-0180 Technical Service: 800-322-3225 Website: www.phoenixcontact.ca Fax: 717-944-1625 DIN rail-mounted equipment protection E-mail: info phoenixcon.com Website: www.phoenixcontact.com 2008 PHOENIX CONTACT L002030d:07.08To choose a circuit breaker, DIN rail-mounted determine the following: Thermal Miniature and Thermal Magnetic Circuit Breakers Thermal Miniature Circuit Protection (TCP) The normal current load (nominal current) Thermal circuit proctectors use heat-sensitive bimetallic elements that respond to Specify the size of the breaker in amps based on the normal overload electrical currents. How fast the circuit breaker must react current load. to a fault condition Thermal Miniature Circuit Protectors are compact protectors designed to Specify a breaker by selecting a speed that avoids Possible types of failure interrupt an electric current under overload conditions. The protector can accommodate nuisance tripping but protects against component damage. Match the short-circuit and overload protection requirements ten nominal currents ranging from 0.10 A to 10 A. to the performance characteristics of the breaker. How many poles are needed After an overload has occurred, TCP breakers are easily reset by pushing the reset button. Determine the number of poles needed that are Rupture capacity The breakers can be plugged into UK 6-FSI/C (screw) or ST 4-FSI/C (spring) terminal connected electrically and structurally. Specify the breaker, knowing the maximum fault current that blocks for convenient DIN rail mounting. can be repeatedly (3x minimum) interrupted without failure Functional requirements of the breaker of the breaker. De ne the requirements for visual inspection, switching, Thermal Magnetic Circuit Breakers (TMC) auxiliary circuits or space. Maximum interrupting capacity Choose the breaker, knowing the maximum current at a Thermal Magnetic circuit breakers interrupt an electrical current under overload Environmental factors given voltage that the breaker can interrupt safely without or short-circuit conditions. They have both thermal circuit interruption and magnetic temperature, moisture, vibration damage to surrounding components. interruption functions. The thermal function uses heat-sensitive bimetallic elements that Determine if there are unusual conditions in which the respond to overload currents. The magnetic function responds to very high current breaker must operate. The wire size the breaker must accommodate overloads such as those that might occur during short-circuit conditions. Determine if the breaker can accept the wire sizes required. TMC 42 breakers are available in one- or two-pole con guration for currents ranging from 0.10 to 16 amps. TMC 42 breakers can be snapped directly on a DIN rail. They are reset by pushing a red reset button. TMC 60 breakers are available in one-, two-, or three-pole con gurations for currents ranging from 0.5 to 63 amps. TMC 60-Series breakers can be snapped directly on a DIN rail. They are reset by moving the toggle switch to the green (activation) position. TMC 1 breakers are available in one-, two- or three-pole con gurations for currents ranging from 0.1 to 32 amps. This high-density breaker has built-in auxiliary contacts. TMC 1 breakers can be snapped directly on a DIN rail. They are reset by moving the toggle switch to the I (activation) position. 1