CIRCUIT PROTECTORS IDEC IZUMI CORPORATION NRF110 (Without Auxiliary Contacts) NRF111 (With Auxiliary Contacts) Easy-to-use Economical Circuit Protectors Snaps into a 16-mm-diameter hole FEATURES sstiCSSCS~SW The NRF series circuit protectors feature IDECs original Simple Trigger Action Release mechanism to ensure reliable tripping during an overload. Their small 16-mm-dia size, like a fuse holder, together with their high performance, high reliability and long life is ideal for protecting small electric appliances from overcurrent. e@Pop-out Indicator When the circuit is overloaded, the NRF breaks the circuit and the red-sided pushbutton pops out to indicate tripping. @Simple Mechanism for Reliability The simple trigger action release mechanism trips when an overcurrent flows. The mechanism can be re-thrown by simply pressing the button. A tripfree mechanism is also incorporated to keep the circuit open even when the button is pressed during an overload. 16-mm-dia Fuse Holder Size The NRF can snaps into a 16-mm-dia hole like a fuse holder. DIN rail and surface mount adapters are available for installation in a panel. e@ Beautiful Design & Colorful Bezels Their front design matches every control panel. Bezels are available in six colors; black (standard), red, blue, green, yellow, and white for color-coding each circuit. e@Solder or Receptacle Connection The housing is made of a thermoplastic resin with a high heat-resistance to allow the terminals to be soldered. The terminals also accept #250 receptacles, suited for easy maintenance and applications in quantities. Variety of Rated Current The rated current is available in 9 types ranging from 300mA to 15A. @More Than 1,000 Repeat Operations The NRF can be used for more than 1,000 operations when tripping at 200% the rated current. Unlike fuses, their capability of repeated operations saves cost and maintenance. @ Auxiliary Contacts and/or Manual OFF Mechanism The NRF is available with 1NO auxiliary contacts (125V AC/32V DC, 50mA), which can be used to make an alarm or control circuit. Optional manual OFF mechanism opens the main contacts by pressing the button, convenient function for checking the circuit with power OFF. (The contacts can be opened only when power is OFF.} @UL Recognized and CSA Certified NRF series circuit protectors without manual OFF mechanism are recognized by UL (File No. E68029), certified by CSA (File No. LR47985), and approved by TUV test.NIRFseries CIRCUIT PROTECTORS TYPES SPECIFICATIONS Auxialiary Manual OFF Protection Method | Thermal tripping Type No. ; Contacts Mechanism Internal Circuit Series trip Series trip (with auxiliary contacts) WE NRF1I00-0 NO NO No. of Poles 1 AW @ NRF1110-0 YES NO Applicable Voltage | 32V DC, 250V AC maximum BW NRF2100-0 NO YES Rated Current 300mA, 500mA, 1A, 2A, 3A, 5A, 8A, A NRF2110-0 YES YES Rated Interrupting | 300mA to SA: Rated current x 6 Capacity 8A to 15A: Rated current x 10 Auxiliary Contact INTERNAL CIRCUIT Rating 1NO, 50mA 125V AC/32V DC Reference 25C NRF 110/NRF210 NRF111/NRF211 Temperature (w/o Auxiliary Contacts) (w/Auxiliary Contacts) Operating 3 - Temperature 10 to +60C (no freezing) (NOTE) - pe o No trip at the rated current Trip Time (at 25C) | Within 1 hour at 135% the rated current Reset Time 60 sec minimum co Vibration 100m/sec? (10 to 55Hz) L Resistance (Approx. 10G) 4 \ Shock Resistance 1,000 m/sec2 (Approx. 100G) ' Overcurrent durability: 1,000 operations minimum @ - (tripping at 200% the rated current) Life Mechanical life of models with manual . OFF mechanism: Auxiliary Contacts: 1NO 240 operations minimum (switching at no load) Insulation we APPLICATIONS Resistance 100 MQ minimum (500V DC megger) The NRF series circuit protectors are designed to protect Between main contacts and between . . : . . main contact and ground: control circuits and small electric appliances from over Dielectric Strength 2,000V AC, 1 minute currents. Their capability of repeated operations are Between main and auxiliary contacts: suited for use in relay circuits, motor circuits, heater 1,500V AC, 1 minute circuits, transformers, solenoids, solenoid valves, semi- Main terminal: #250 Tab terminal conductor circuits, and many other applications. Terminal Style Auxiliary contact terminal: 1.4W x 0.2 mm thick solder terminal [Examples] ; ; Weight Approx. 15g Office Automation Equipment NOTE: The rated current is the value at the reference ambient Copiers, shredders, personal computers, word processors, temperature of 25C, and varies with the operating ! facsimile telegraphs, printers, computer terminals, com- temperature. The rated current can be corrected accord- munication equipment, and power supplies. ing to the curves on page 3. Measuring Instruments Electrical measuring instruments, industrial meters, analyzers, recorders, data processors, test equipment, and chemical equipment. TIME DELAY CURVES @ Rated Current 300mA to 5A Rated Current 8A to 15A 1000 1000 300mA to 5A 8A to 15A 100 100 (at 25C) (at 25C) 10 0.1 Time Delay (seconds) 0.1 Time Delay (seconds) 0.01 0.01 100 1.50 200 300 400 500 600 700 800 900 1000 1001150200 300 400 500 600 700 800 900 1000 9 Current (percent the rated current) Current (percent the rated current) NOTE: Dashed lines are reference values. onNIRFseries CIRCUIT PROTECTORS RATED CURRENT VS INTERNAL RESISTANCE TEMPERATURE CORRECTION CURVES Internal Resistance (2) The rated current is based on an ambient temperature of Rated Current +15% Temperature 25C. Since a thermal tripping method is employed, the 300mA 9.08 rated current should be corrected according to the ambient temperature with reference to the curves shown 500mA 3.27 below. 1A 0.81 300mA 2A 0.235 ss 140 3 s 3A, 2A, 1A, A 3A 0.128 25C Ss 130 10A, 8A, 5A 5A 0.0503 8120 8A 0.0085 5 110 10A 0.0095 8 1 15A 0.0064 8 90 The internal resistance tends to be larger for a smaller E 80 rated current. When the circuit protector is used ina 5 low-voltage circuit, voltage drop should be taken into 6 70 consideration. 3 60 o ea ACCESSORIES 10 0 10 20 J 30 40 5060 @ Adapters Ambient Temperature (C) DIN Rail Mount Adapter (NRF-D) Surface Mount Adapter (NRF-M) Appearance NRF 016.2 Hole $16.2 Hole 1.2 thick 1 C) 1.2 thick ep ____ | 2 3 Q 7 "4 Dimensions (mm) 22 DIN Rail \ 2-63.5 Holes l__A-- | y= =] = as 0 a @DIN Rails 55 Dimensions (mm) 58 imenstons a Tol Tet . Baa [| Otte BADA Q & a 9 wn BAP a a % D ~ BADA . } (Aluminum) BAA (Aluminum) BAP Ly nh (Steel) A 30 1-35] 25 a re Lent oa | et tes BADA BAA BAP 1,25. .| nl Ppapsat 1,000mm BADA1000 BAA1000 BAP1000 ne 3NIRFseries CIRCUIT PROTECTORS DIMENSIONS & PANEL CUT-OUT Aux. contact terminal (1.4W x 0.2 thick solder terminal) Panel thickness 0.8 to 2.3 019 43 >. 7 39.0 9.3 * oo 14.5 (Tripped) Main terminal p| $19.2 INSTRUCTIONS 6. 1. Since the NRF is designed for protection against over- load in principle, it should be used within the rated interrupting capacity. An excessive overcurrent may affect the bimetal characteristics or damage the inter- nal mechanism. 2. After tripping, the NRF cannot be re-thrown until the bimetal cools down. Allow the NRF at least 60 seconds before re-throwing. 3. The NRF may not trip at an instantaneous over- current due to its principle. When a short time delay is required, IDECs NRA series circuit protectors of the electromagnetic tripping system are recom- mended. . The NRF is shipped with the button depressed and the internal circuit closed. To confirm operation of the models without manual OFF mechanism, apply approximately 200% the rated current to trip the Bezel Color Code Panel Cut-Out e For preventing rotation $16.273? $15.7 +6? #250 Tab terminal (6.4W x 0.8 thick) All dimensions in mm. Unlike conventional switches, the models with manual OFF mechanism are not suited for frequent switching due to their construction and should be operated without load. Their mechanical life is 240 operations at minimum when switching at no load. ORDERING INFORMATION When ordering, specify the type number, the bezel color code, and the rated current. {Example] NRF111 - Rated Current Type No. 300mA, 500mA, See TYPES on page 2. 1A, 2A. 3A, BA. 8A, 10A, 15A blank: Black Y: Yellow NRF. R: Red S: Blue 5. When installing receptacles to the terminals, hold the G: Green W: White NRF body and press in the receptacles. Specifications and other descriptions in this catalog are subject to change without notice. IDEC IZUMI CORPORATION 7F, Shin-Osaka Mori Bldg., 13-9, Nishinakajima 5-Chome, Yodogawa-ku, Osaka 532, Japan Phone: (06) 300-5530, Telex: 523-3710, Facsimile: (06) 300-5537 IDEC CORPORATION CUSA) 1213 Elko Drive, Sunnyvale, Calif. 94089-2211, U.S.A. Phone: (408) 747-0550, Facsimile: (408) 744-9055 IDEC CANADA LIMITED Unit 121-7350-72 Street, Delta, British Columbia, V4G 1H 9, Canada Phone: (604) 946-1271, Facsimile: (604) 946-0368 IDEC ELEKTROTECHNIK GMBH WendenstraBe 331, 0-20537 Hamburg, Germany Phone: 0 40-25 11 91-93, Facsimile: 0 40-25 33 61 IDEC ELECTRONICS LIMITED Canbury 2000, Unit 12 Elm Crescent, Kingston-Upon-Thames, Surrey KT2 6HJ, UK Phone: 081 549 0737, Facsimile: 081 546 0963 IDEC TAIWAN CORPORATION 3rd Floor, 133, Min Sheng E. Road, Sec. 3, Taipei Phone: (886) 2-718-8686, Facsimile: (886) 2-718-9393 Cat. No. EP294-5 SEPTEMBER 93 1T PRINTED IN JAPAN