Circuit Breakers NRC Series For up-to-date information, or to request a full copy of this catalog, contact us at www.idec.com or 800-262-IDEC.. Due to continuous product improvements, specifications are subject to change wihtout notice. Circuit Breakers Industrial Automation Catalog Section - U906 Circuit Breakers Selection Guide Selection Guide, continued Selection Guide: NRBM and NRC Series Series Model Page NRBM NRC N-12 N-19 Lever Slide, lever Appearance Actuator Style Protection Method Electromagnetic trip Number of Poles 1, 2, 3 1, 2 Internal Circuits Series current trip Series current trip Auxiliary Contact Optional (250V AC, 5A; 50V DC, 1A) Alarm Contact Optional (250V AC, 5A; 50V DC, 1A) Inertia Delay Time Delay Curves Optional (for resistance to high inrushes) -- 2 types for DC; 3 types for AC 2 types for DC; 2 types for AC Rated Voltage Rated Tripping Currents Rated Interruption Capacity Approvals 250V AC, 50/60Hz, 65V DC 1A, 2A, 3A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A, 40A, 50A 0.30A, 0.5A, 0.75A, 1A, 2A, 3A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A 1000A, 250V AC (50/60Hz), 65V DC 2,500A, 220V AC 50/60Hz (1-pole) 1,500A, 220V AC 50/60Hz (2-pole) 1,500A, 65V DC (1-pole) 1000A, 65V DC (2-pole) UL, CSA UL, CSA 1. For NRBM dimensions, see page N-25. 2. For NRC dimensions, see page N-26. 3. All switch only units are not CSA certified. 4.UL recognized, applicable standard: UL1077, "Supplementary Protectors." 5. Not suitable for branch circuit protection. N UL Recognized File No. E68029 www.idec.com CSA Certified File No. LR47985 USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC N-3 Circuit Breakers NRC Series NRC Series NRC series circuit breakers offer circuit protection which is far superior to using fuses in applications containing relay circuits, motor circuits, heater circuits, transformers, solenoid valves, and semiconductors. Key features of the NRC series include: * Mounting options include DIN rail, direct surface, or panel cut-out * Designed for control circuit and power line protection * Rated interrupting capacity of 2,500A (1-pole) and 1,500A (2-pole) * Choice of slide or lever actuators * All models equipped with reset trip indicators * Models available for AC or DC loads * Two curves available for long or short delay * Available in 11 rated currents from 300mA to 30A * Options include auxiliary contacts * UL1077 recognized "Supplementary Protectors" CSA Certified File No. LR83454 UL Recognized File No. E68029 Load Type AC Protection Method DC Electromagnetic tripping Internal Circuit Series current trip Number of Poles 1, 2 Rated Voltage 250V AC, 50/60Hz, 65V DC Rated Tripping Currents 0.30A, 0.50A, 1A, 2A, 3A, 5A, 7A, 10A, 15A, 20A, 30A 2,500A, 250V AC, 50/60Hz (2-pole: 1,500A) Specifications Rated Interrupting Capacity 1,500A, 65V DC (2-pole: 1,000A) Optional SPDT contact output 250V AC 3A (resistive load) 65V DC 1A (resistive load)) Auxiliary Contact Reference Temperature 40C Operating Temperature -10 to +60C (avoid freezing) Insulation Resistance Dielectric Strength 100M minutes (500V megger) Between the live part and the ground, between terminals of different poles, between terminals of the same pole, and between main circuit and auxiliary contact: 2,000V AC, 1 minute N 100N (approximately 10G) (10 to 55Hz) Vibration Resistance Shock Resistance 500N (approximately 50G) Life 10,000 operations minimum Main terminal: M4 screw (20A maximum) M5 screw (30A) Auxiliary terminal: M3.5 screw Terminal Style Weight (approximate) 1-pole: 115g, 2-pole: 230g Not suitable for branch circuit protection. www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC N-19 Circuit Breakers NRC Series Part Numbering Guide NRC series part numbers are composed of 5 part number codes. When ordering an NRC series part, select one code from each category. Example: NRC111L- 0.30A-AA NRC 11 1 L 0.30A AA No. of Poles Auxiliary Actuator Rated Current Time Delay Curve Contacts Part Number Codes: NRC Series Appearance No. of Poles Type Description Part Number Code 1-pole 11 2-pole 21 Auxiliary Contacts No 0 Yes 1 Slide Leave blank Lever L Remarks Slide actuator available only for 1-pole models. Actuator Type Rated Current 0.30A, 0.50A, 1A, 2A, 3A, 5A, 7A, 10A, 15A, 20A, 30A Time Delay Curve AC curves: AA, EA; DC curves: AD, ED 1. For NRC series accessories, see page N-21. 2. For NRC series time delay curves, see page N-22. 3. For NRC series dimensions, see page N-26. N N-20 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC Circuit Breakers NRC Series Accessories Part Numbers: DIN Rail and Mounting Clips Description Appearance Aluminum DIN Rail (1 meter length) Part No. BNDN1000 Remarks For dimensional drawing, see page N-30. DIN Rail End Clip Metal end clip used to prevent side-to-side movement of circuit breakers when mounted on a DIN rail. One clip required at each end. BNL5 Panel Cut-Out Mounting Bracket Mounting bracket used to mount circuit breaker(s) in panel cut-outs. Not applicable for models with auxiliary contacts (NRC111, NRC111L, NRC211L). When mounting 2-pole models (NRC210L), use two brackets side-by-side. It is recommended to use the "Fast-On Tab Terminal Adapter" (below) when using this bracket. Surface Mounting Bracket Used for direct surface mounting 1-pole circuit breaker models. NRC-M For dimensional drawings, see page N-26. NRC-F For dimensional drawings, see page N-26. NRC-T For dimensional drawings, see page N-30. Fast-On Tab Terminal Adapter Adapter used for Fast-On wiring termination. Fast-On tab extends 0.47" (12mm) in length. Cannot be used to replace models with M5 main terminals (30A). Fast-On terminal adapter recommended when using panel cut-out mounting bracket for rear wiring. Jumper NRC-J Used for jumping auxiliary terminals. The rated current for jumper is 3A. For dimensions of NRC series accessories, see page N-30. Internal Circuit 2-Pole without Auxiliary Contacts 1-Pole without Auxiliary Contacts Load Load Line Line 2-Pole with Auxiliary Contacts 1-Pole with Auxiliary Contacts NC NO C Load www.idec.com N Line Line NC NO C Load USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC N-21 Circuit Breakers NRC Series Time Delay Curves (numerical equivalent) Overcurrent -- Time Delay Characteristics in Seconds (at 40C) Percent of Rated Current DC AC Curve 100% 125% 150% 200% 400% 600% 800% 1000% AD No trip 40 - 240 10 - 50 3.5 - 18 0.6 - 3 0.008 - 0.5 0.005 - 0.09 0.004 - 0.07 ED No trip 0.04 - 0.4 0.025 - 0.15 0.015 - 0.06 0.007 - 0.025 0.005 - 0.018 0.004 - 0.017 0.004 - 0.017 AA No trip 40 - 240 10 - 50 3.5 - 18 0.9 - 4 0.35 - 2 0.07 - 1.2 0.01 - 0.5 EA No trip 0.05 - 0.4 0.03 - 0.17 0.02 - 0.07 0.008 - 0.025 0.005 - 0.018 0.004 - 0.017 0.004 - 0.017 1. All values above are in seconds. 2. Data in this table is equivalent to information presented in following time delay curves. Time Delay Curves AC (50/60 Hz) Time Delay Curves DC Time Delay Curves 1,000 1,000 AD Delay Curve at 77F (25C) 100 10 Time in Seconds Time in Seconds AA Delay Curve at 77F (25C) 100 1 0.1 0.01 10 1 0.1 0.01 100 125 150 200 300 400 500 600 700 800 900 1,000 100 125 150 Percent of Rated Current 1,000 200 300 400 500 700 800 900 1,000 1,000 ED Delay Curve EA Delay Curve at 77F (25C) 100 at 77F (25C) 100 10 Time in Seconds Time in Seconds 600 Percent of Rated Current 1 0.1 10 1 0.1 N 0.01 0.01 100 125 150 N-22 200 300 400 500 600 700 Percent of Rated Current www.idec.com 800 900 1,000 100 125 150 200 300 400 500 600 700 800 900 1,000 Percent of Rated Current USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC Circuit Breakers NRC Series Resistance and Impedance Characteristics AC Impedance at 40C DC Resistance 100 0.30A 15.1 25.6 0.50A 5.58 9.04 1A 1.54 2.33 2A 0.341 0.548 3A 0.162 0.261 5A 0.061 0.099 7A 0.031 0.048 10A 0.017 0.026 15A 0.008 0.013 20A 0.0058 0.0075 30A 0.0039 0.0046 Rated Current (A) Coil Impedance (at 40C) Rated AC Impedance Current (50/60Hz) 10 1 0.1 0.01 0.0001 0.001 0.01 0.1 1.0 10 100 10 100 DC Resistance at 40C 100 Voltage Drop Due to Coil Impedance The internal impedance of a circuit breaker tends to be larger for a smaller rated current. Therefore, when low rated circuit breakers are used, the voltage drop should be taken into consideration. Rated Current (A) Tolerance: 10% (0.3A to 3A), 25% (5A to 30A). 10 1 0.1 0.01 0.0001 0.001 0.01 0.1 1.0 Resistance () Rated Current (A) Temperature Correction Curve Curves AA, AD (on 125% rated current) 400 200 100 80 60 40 -40 -20 25 50 0 Ambient Temperature (C) www.idec.com 70 90 USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC N N-23 Circuit Breakers Instructions Instructions: All Series General IDEC's circuit breakers have been developed for the protection of electrical circuits and small-sized electrical equipment and provide excellent protection against overloads and short-circuits. Additionally, IDEC's circuit breakers are designed to suit specific needs. Each series offers unique circuit protection characteristics and a choice of actuator styles. IDEC's Circuit Breaker Features * Various models are available with different internal circuits, tripping characteristics, and rated currents * 1- to 3- multi-pole * Inertia delay * Auxiliary contacts and alarm contacts * The electromagnetic tripping system is not affected by ambient temperature * Safe trip-free mechanism * Vibration- and impact-resistant design * When using accessories such as plug-in bases, flush plates, and colored caps, a variety of mounting styles is possible -- such as DIN rail mounting, snap mounting into panel cut-outs, and color-coded arrangement on the panel Mounting Instructions: Installation Angle Designed to be mounted on a vertical surface, the circuit breakers should be mounted on a surface within 10 of the vertical plane. If the circuit breaker is mounted on a horizontal surface or at any angle other than the specified angle, its characteristics will be changed. Multi-Pole Assemble Multi-pole types such as 2- or 3-pole should be assembled by IDEC. Because of their characteristics, 1-pole breakers cannot be combined to produce multi-pole units. Applications The IDEC NRA circuit breaker series features superior overload and short-circuit protection. Many combinations of protection mechanisms and internal circuit connections enable wide applications. * Precision measuring instruments: electronic counters, projection instruments, oscilloscopes, industrial instrumentation, and analytic devices * Electronic communication devices: facsimile machines, computers, recorders * Industrial machinery: printers, elevators, cranes * Chemical and food industry machines: vacuum devices, wrappers, centrifuges, agitators * Machine tools: mill grinders, drills, presses * Business machines: automatic vendors, medical equipment, beauty salon equipment, entertainment games * Other: office equipment, air-conditioners, conveyor belts, and many more How the Breaker Operates IDEC's hydraulic magnetic circuit breakers operate like a solenoid coil. The coil unit consists of an oil-filled tube with a metal core at one end and a pole piece and armature at the opposite end with a spring in between. When a current load passes through the coil winding, it creates a magnetic field. As long as the current load is either at or below the nominal rating of the breaker, the metal core will remain stationary. If the current load increases beyond the nominal rating, the strength of the magnetic field causes the core to move toward the pole-end of the tube. The oil viscosity regulates the core's movement through the tube, thereby regulating the time delay. As the percentage of current load increases, the required trip time of the breaker decreases and vice versa. When the current reaches the overload rating, the metal core will meet the pole piece at the opposite end of the tube. At this point, the armature is attracted to the same pole piece, tripping the breaker. In case of sudden short circuit, the magnetic field created will instantly trip the breaker. . Internal Circuits Overview Description Circuit Example Series Trip Load N This is the most common circuit breaker, providing excellent overload and short circuit protection. It can also be used as an ON/OFF switch. Series Trip with Auxiliary Contact Load A Since the auxiliary contact operation is interlocked with the ON/OFF of the main contactor, circuit breaker operation can be monitored by a lamp or buzzer. This circuit breaker can also be used to control auxiliary circuits up to 250V AC/5A (resistive load). Load B Series Trip with Alarm Contact Load A Since the alarm contact is electrically independent of the main contactor, but actuates when the protective element operates. The alarm can be used with a lamp or buzzer to monitor trip operations, and can also be used for controlling alarm circuits. The contact rating is 250V AC/5A (resistive load). Load B N-24 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC Circuit Breakers Dimensions Dimensions: NRC Series NRC110 Slide Actuator 1-Pole without Auxiliary Contacts NRC110L Lever Actuator 1-Pole without Auxiliary Contacts NRC111 Slide Actuator 1-Pole with Auxiliary Contacts N Installation Angle: Circuit breakers are designed to operate on a vertical surface. The mounting angle should not exceed a vertical plane by more than 10. N-26 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC Circuit Breakers Dimensions Dimensions: NRC Series, continued NRC111L Lever Actuator 1-Pole with Auxiliary Contacts NRC210L Lever Actuator 2-Pole without Auxiliary Contacts NRC211L Lever Actuator 2-Pole with Auxiliary Contacts N Installation Angle: Circuit breakers are designed to operate on a vertical surface. The mounting angle should not exceed a vertical plane by more than 10. www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC N-27 Circuit Breakers Dimensions Panel Cut-Outs, continued All drawings are not to scale unless scale is indicated. NRBM Series NRBM 0.745" (19.1mm) 1.38" (35.5mm) 2.04" (52.3mm) 0.33" (8.4mm) 1-Pole: 0.764" (19.6mm) 2-Pole: 1.51" (38.7mm) 3-Pole: 2.25" (57.8mm) NRC Series Surface Mounting Hole Layout 1-Pole Surface Mounting Hole Layout 2-Pole .472" (12mm) 2-M4 Holes (4.5mm) 2.11" (54mm) 2-M4 Holes (4.5mm) 2.11" (54mm) 1.45" (37mm) N Scale: Full Size www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC N-29 Circuit Breakers Dimensions Accessory Dimensions Panel Cut-Out (when using NRC-M) 2.2" (56mm) 4-O0.16" (4mm) 1.81" (46mm) 2.2" (56mm) 1.81" (46mm) 4-O0.16" (4mm) 1.00" (25.5mm) 2.00" (51mm) 2-Pole 1.00" (25.5mm) 1-Pole BNDN1000 Aluminum DIN Rail Length in Inches (mm) F G H K Overall length 39.4" (1000mm) A B D C H A 1.4" (35mm) B 1.14" (29mm) C 0.78" (23mm) D 1.2" (31mm) E 0.41" (10.5mm) F 0.11" (3mm) G 2" (51mm) H 0.47" (12mm) K 0.16" (4mm) NRT: Screw Terminal Adapter (for use with NRA Series) 1.For use on main terminals only. 2.Includes M3.5 clamp screw. Panel Cut-Out Adapter (NRC-M) NRC-M Panel Mounting N Surface Mounting Bracket (NRC-F ) NRC-F Surface Mounting N-30 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDEC