IZM26 Circuit-breakers IN26 Switch-disconnectors
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Robust safety Extract from Main Catalogue HPL2010

You will find complete information on circuit-breakers Series NRX up to 4000 A Circuit-breaker IZM26, switch-disconnector IN26 from 800 A to 6300 A Technical overview IZM 26 air circuit breakers Electronic releases for IZM26 circuit-breakers here: www.eaton.eu Ǟ Customer Support Ǟ Catalogues Ǟ Circuit Protection Ǟ Catalogue Circuit-breaker – Series NRX System overview IZM26 circuit-breakers Description Air circuit-breaker IZM26, IN26 switch-disconnector Ordering Basic devices Withdrawable units Cassettes, shutter (busbar tag shroud) Electrical accessories Cell switches, motor operator,...

IZM circuit-breakers, IN switch-disconnectors IZM26 air circuit-breakers IZM26 Icu = Ics at Ue = 440/690 (1100) V AC Icu: Rated ultimate short-circuit breaking capacity at rated operational voltage Ue Ics: rated service short-circuit breaking capacity at rated operational voltage Ue Normal switching capacity (N) High switching capacity (H) Rated operational current In A Basic switching capacity (B) Icu = Ics at Ue = 440/690 (1100) V AC Icw at t = 1 s/t = 3 s Icw: Rated short-time withstand current Normal switching capacity (N) High switching capacity (H) Rated operational current In A Basic...

Icm at Ue = 440/690 V AC Icm: Rated short-circuit making capacity (Peak value) at rated operational voltage Ue Normal switching capacity (N) High switching capacity (H) Rated operational current In A Basic switching capacity (B) Icm at Ue = 440/690 V AC Icw at t = 1 s/t = 3 s Icw: Rated short-time withstand current Normal switching capacity (N) High switching capacity (H) Rated operational current In A Basic switching capacity (B)

Electronic releases for IZM26 circuit-breakers System protection Selectivity protection Universal protection Universal protection with power measurement Protective functions Ordering options LI LSI, LSIG LSI, LSIG, LSIA LSI, LSIG, LSIA Overtemperature trip • • • • Long delay time l4t - - - 1 - 5 s Thermal memory • • • • Overload alarm signal - - 0'> 0'>: (0.5 -1.0) x lr Short-time delayed short-circuit S Short delay pickup - (2 -10) x lr and Ml2) (2- 10) x lrand M12> (2 - 10)x lr and M12> Short delay time l2t at 8 x lr - 100 - 500 ms 100 - 500 ms 100 - 500 ms Short delay time, flat...

Electronic releases for IZM26 circuit-breakers IZM26... IZM26 ...-A... System monitor Digital display Current display (%) Phase voltage (%) Power and energy (%) Apparent power kVA reference and delivery Reactive power kVAR Power factor Crest factor Power quality, harmonics THD factor (%) Fieldbus communication Additional functions Trip history (3 events) Electronic operations counter Test possibility2) Maintenance mode ARMS Curve-form plotting Notes System protection DTA Digitrip 520 LI System diagnostics Cause of trip LEDs Current at trip point Remote signaling contacts Programmable signal...

System overview IZM26 circuit-breaker

Latch check switch Door escutcheon PROFIBUS and Modbus communication interfaces Auxiliary contacts Main terminal kits Locking cover of ON/OFF buttons Vertical connections 3 and 4 pole Front connections 3 and 4 pole Page 18/79 Cassettes for withdrawable units Switching operations counters Rating plug sensor and current transformer Overload trip switch Overcurrent trip (OTS), 2 C Page 18/71 Type A circuit-breakers Type V circuit-breakers Type U circuit-breakers Circuit-breakers P-Part no. Page 18/74 Either 2 or 15 units Page 18/80 Position signalling switch for withdrawable units Trip units...

IZM circuit-breakers, IN switch-disconnectors IZM26 air circuit-breakers, Switch-disconnector IN26 Modular design Eaton's IZM26 circuit-breakers offer a proven and complete range of air circuit-breakers up to 6300 A. Four sizes enable the ideal circuit-breaker to be selected economically for any project. In this way, only the module width increases with the required rated operational current, enabling the most compact and economical size to be selected. Because components are installed from the front, retrofitting accessories is especially quick and easy. This allows flexible response to...

IZM26 air circuit-breakers, Switch-disconnector IN26 Other benefits of the IZM26 External control voltage supply • There are still four main variants of overcurrent release units. Only the fourth variant was renamed and is now “P” (as in Power Measurement) instead of “D” (as in Digital trip). On each P circuit-breaker (Digitrip 1150) the power measurement is already an integral part of the electronic release. • The voltage tap-off for power measurement is integrated in the device so that an additional external voltage transformer is unnecessary. This solution saves costs, space and...

IZM circuit-breakers, IN switch-disconnectors IZM26 air circuit-breakers, Components for communication Data access via PROFIBUS-DP The IZM26 series devices can be connected to a PROFIBUS-DP or Modbus RTU filed bus. Interfaces IZM-PMINT and IZM-MMINT are compact devices for mounting on top-hat rails, i.e. independently of the switch. They output all information available in the trip unit to the fieldbus, including switch status, current, voltage, power, and energy, as well as diagnostic information such as overcurrent, phase asymmetry and overvoltage. The fieldbus also facilitates actuation...

Notes Notes

IZM circuit-breakers, IN switch-disconnectors 3 pole open circuit-breakers IZM26 3 pole open circuit-breakers Switching capacity Rated operational current Frame size Setting range Overload release Fixed mounted Short-circuit releases Delayed Withdrawable units Price See price list Price See price list Cassette must be ordered separately. Circuit-breakers for system protection Including main terminals at rear and control circuit terminals according to ordered options. 50 800 IZM20 320 – 800 – 2 - 10 1000 1250

IZM circuit-breakers, IN switch-disconnectors HPL18049EN Switching capacity 3 pole open circuit-breakers IZM26 Rated operational current Frame size Setting range Overload release Fixed mounted Short-circuit releases Delayed Withdrawable units Price See price list Price See price list Cassette must be ordered separately. Selectively-opening circuit-breakers Including main terminals at rear and control circuit terminals according to ordered options. 50 800 IZM20 320 – 800 2 - 10 2 - 10, OFF 1000 1250