Molded Case Circuit Breakers
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1 Specifications Molded Case Circuit Breakers TD/TS series circuit breakers have built in thermal-magnetic trip units. Some models of the TD/TS series circuit breakers are UL Listed to be applied at up to 100% of their current rating. Because of the additional heat generated, the use of specificallydesigned enclosures and 90 C rated wire are required when using circuit breakers at 100% of their current rating. Markings on the circuit breaker indicate the minimum enclosure size and ventilation requirements. The 90 C wire size shall be based on UL 489. Circuit breakers with 100% rating can also be used in applications requiring only 80% continuous loading. Molded Case Circuit Breakers TD/TS Series Frame size Rated current ln Number of poles Rated operational voltage, Ue AC UL interupting rating 120V 240V AC 50/60Hz 480V 600V Reference standard Available breaker types Accessories Mechanical life Electrical AC Weight 3-pole lbs (kg) Basic dimension, Wx Hx D 3-Pole in (mm) A V ka Operations Operations TD AF 15, 20, 30, 40, 50, 60, 80, 100, NU HU UL 489 Fixed thermal, fixed magnetic FTU Adjustable-thermal, fixed-magnetic FMU - AX - Auxiliary switch AL - Alarm switch SHT - Shunt trip UVT - Undervoltage trip EHU - Extended rotary handle FH - Flange handle PL, PHL - Locking devices (Removable, fixed) MIT - Mechanical interlock device 4,000 4, lbs (1.2kg) 3.54 x 6.46 x 3.39in (90 x 164 x 86mm)
2 Specifications TS250 TS400 TS AF 400AF 800AF 150, 175, 200, , , 600, NU HU NU HU NU HU UL489 Fixed thermal, fixed magnetic, FTU Fixed thermal, fixed magnetic, FTU Fixed thermal, fixed magnetic, FTU Adjustable-thermal, fixed-magnetic, FMU Adjustable-thermal, fixed-magnetic, FMU Adjustable-thermal, fixed-magnetic, FMU Adjustable-thermal, Adjustable-magnetic (3 pole), ATU Adjustable-thermal, Adjustable-magnetic (3 pole), ATU Adjustable-thermal, Adjustable-magnetic (3 pole), ATU AX - Auxiliary switch AX - Auxiliary switch AX - Auxiliary switch AL - Alarm switch AL - Alarm switch AL - Alarm switch SHT - Shunt trip SHT - Shunt trip SHT - Shunt trip UVT - Undervoltage trip UVT - Undervoltage trip UVT - Undervoltage trip EHU - Extended rotary handle EHU - Extended rotary handle EHU - Extended rotary handle FH - Flange handle FH - Flange handle FH - Flange handle PL, PHL - Locking devices (removable, fixed) PL, PHL - Locking devices (removable, fixed) PL, PHL - Locking devices (removable, fixed) MIT - Mechanical interlock device MIT - Mechanical interlock device MIT - Mechanical interlock device 5,000 5,000 3,000 1,000 1, lbs (1.9kg) 12.57lbs (5.7kg) 29.98lbs (13.6kg) 4.13 x 7.01 x 3.39in (105 x 178 x 86mm) 5.51 x x 4.33in (140 x 292 x 110mm) 8.27 x x 5.31in (210 x 428 x 135mm)
3 Ordering Information TD/TS Series Circuit Breakers (FTU) UL Interrupting Rating (ka) Frame Amp Size Rating 240V 480V 600V NU HU NU HU NU HU 125AF 250AF 400AF 800AF 15A Magnetic Trip Setting HU Series (High Interrupting) TD125HU FTU A NU Series (Normal Interrupting) TD125NU FTU A 20A TD125HU FTU A TD125NU FTU A 30A TD125HU FTU A TD125NU FTU A 40A TD125HU FTU A TD125NU FTU A 50A X TD125HU FTU A TD125NU FTU A 60A TD125HU FTU A TD125NU FTU A 80A TD125HU FTU A TD125NU FTU A 100A TD125HU FTU A TD125NU FTU A 125A TD125HU FTU A TD125NU FTU A 150A TS250HU FTU A TS250NU FTU A 200A X TS250HU FTU A TS250NU FTU A 250A TS250HU FTU A TS250NU FTU A 300A TS400HU FTU A TS400NU FTU A X 400A TS400HU FTU A TS400NU FTU A 500A TS800HU FTU A TS800NU FTU A 600A X TS800HU FTU A TS800NU FTU A 800A TS800HU FTU A TS800NU FTU A TD/TS Series Circuit Breakers (FMU) UL Interrupting Rating (ka) Frame Amp Size Rating 240V 480V 600V NU HU NU HU NU HU 125AF 250AF 400AF 800AF 40A Magnetic Trip Setting HU Series (High Interrupting) TD125HU FMU A NU Series (Normal Interrupting) TD125NU FMU A 50A TD125HU FMU A TD125NU FMU A 60A TD125HU FMU A TD125NU FMU A X 80A TD125HU FMU A TD125NU FMU A 100A TD125HU FMU A TD125NU FMU A 125A TD125HU FMU A TD125NU FMU A 150A TS250HU FMU A TS250NU FMU A 200A X TS250HU FMU A TS250NU FMU A 250A TS250HU FMU A TS250NU FMU A 300A TS400HU FMU A TS400NU FMU A X 400A TS400HU FMU A TS400NU FMU A 500A TS800HU FMU A TS800NU FMU A 600A X TS800HU FMU A TS800NU FMU A 800A TS800HU FMU A TS800NU FMU A TD/TS Series Circuit Breakers (ATU) UL Interrupting Rating (ka) Frame Amp Size Rating 240V 480V 600V NU HU NU HU NU HU 250AF 400AF 800AF 150A Magnetic Trip Setting HU Series (High Interrupting) TS250HU ATU A NU Series (Normal Interrupting) TS250NU ATU A 200A X TS250HU ATU A TS250NU ATU A 250A TS250HU ATU A TS250NU ATU A 300A TS400HU ATU A TS400NU ATU A X 400A TS400HU ATU A TS400NU ATU A 500A TS800HU ATU A TS800NU ATU A 600A X TS800HU ATU A TS800NU ATU A 800A TS800HU ATU A TS800NU ATU A
4 Technical Information Application Circuit Breakers for 400Hz Networks When circuit breakers are used at high frequencies, the breakers are required to be derated due to increased resistance of the copper sections resulting from the skin effect produced by eddy currents at 400Hz. Standard production breakers can be used with alternating currents with frequencies other than 50/60Hz when appropriate derating coefficients should be applied. Thermal Magnetic Trip Thermal trip: From the data shown below, the tripping threshold of the thermal element (ln) decreases as the frequency increases because of the reduced conductivity of the materials and the increase of the associated thermal phenomena. Rated current (A) at 400Hz= K1x rated current (A) at 50/60Hz. Instantaneous trip: The magnetic threshold increases with the increase in frequency. Instantaneous current (A) AT 400Hz= 2x Instantaneous current (A) at 50/60Hz Thermal Magnetic Trip Units TD and TS Series Performance Table at 400Hz Rated current (A) In at 400Hz MCCB MCCB Style K1 (Thermal trip units) Multiplier factors (K1, K2) K2 (Magnetic trip units) TD125NU, TD125HU FTU FMU TS250NU, TS250HU FTU 300 FMU 350 TS400NU,TS400HU ATU TS800NU, TS800HU *K1x multiplier factor of rated current (ln) K2-multiplier factor of instantaneous current due to the induced magnetic fields FTU-Fixed Thermal and magnetic trip unit FMUx-Adjustable thermal and fixed magnetic trip unit ATUx-Adjustable thermal and magnetic trip unit
5 BREAKER BO NEMA 3R Enclosed Circuit Breaker AF NEMA Rated Enclosed Breaker for Harsh Environments Simplified product range AF: 125, 250, 400, 800 Ampere range: 15A ~ 800A Superior technology results in high performance Cerus TD and TS circuit breakers provide superior performance in a compact package, with adjustable thermal trip settings and magnetic trip settings for ultimate flexibility Advanced arc quenching technology ensures excellent trip performance and long life Standardized internal accessories are interchangeable on all models and are field or factory installed Accessories mount on right or left side to simplify panel wiring Perfect for main disconnect applications Variable accessories Common use of electrical auxiliaries Motor operator Plug-in kit Terminals Communication module Cerus support & service Live tech support Made in USA Same day shipping 5 year warranty World class customer service High Interrupting Capacity TS800HU TS400HU TS250HU TD125HU TD125NU TS800NU TS400NU TS250NU Rated current (A) 800A 400A 250A 125A
6 Ordering Information *Please refer to page 92 for Molded Case Circuit Breaker part numbers TD/TS Series Accessories Alarm & Auxiliary Switches Description Alarm Switch for TD/TS Series MCCB Auxiliary Switch for TD/TS Series MCCB Part Number AL-TD/TS AX-TD/TS Under Voltage Trip, UVT Control Voltage AC/DC 24V AC/DC 48V AC/DC 110~130V AC/DC 200~240V/DC 250V AC/DC 380~440v AC/DC 440~480v Part Number UVT-24V UVT-48V UVT-120V UVT-230V UVT-400V UVT-480V Shunt Trip, SHT Control Voltage DC 12V AC/DC 24V AC/DC 48V AC/DC 110~130V AC/DC 220~240V/DC250V AC/DC 380~500V Part Number SHT-12VDC SHT-120V SHT-230V SHT-24V SHT-48V SHT-480V Enclosures AF 125AF 250AF 400AF 800AF Part Number CER1-TD125CB-ENCL CER1-TS250CB-ENCL CER1-TS400CB-ENCL CER1-TS800CB-ENCL
7 Breaker Box Dimensions CER1-TD125CB-ENCL MTG MTG FRONT VIEW RIGHT VIEW BACK VIEW Ø1.750 KNOCKOUT (x2) Ø1.125 KNOCKOUT (x2) BOTTOM VIEW CER1-TS250CB-ENCL MTG MTG FRONT VIEW SCALE 1/5 Ø.250 LOCKOUT Ø2.500 KNOCKOUT (x2) RIGHT VIEW SCALE 1/5 BACK VIEW SCALE 1/5 Ø1.500 KNOCKOUT (x2) BOTTOM VIEW SCALE 1/
8 Breaker Box Dimensions CER1-TS400CB-ENCL 8 3/4 6 1/2 MTG. 3/8 THRU 37 1/16 OD 25 MTG. FRONT VIEW RIGHT VIEW BACK VIEW 11 11/16 OD BOTTOM VIEW CER1-TS800CB-ENCL MTG MTG. FRONT VIEW RIGHT VIEW BACK VIEW BOTTOM VIEW
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