Microelettrica Scientifica

About Us

For 60 years Microelettrica Scientifica has been designing, developing and producing, in full autonomy, contactors, protection relays and resistors dedicated to the most advanced and demanding applications of railway transportation, urban mobility and industry.

Acknowledged and esteemed all over the world, Microelettrica Scientifica’s product quality results from continuous research, realized in close cooperation with its customers in order to precisely and punctually meet today’s and tomorrow’s needs.

Since 2005 Microelettrica Scientifica is part of Knorr-Bremse Group, the world’s leading manufacturer of braking systems for rail and commercial vehicles.

Products

 

 

5 highly customizable product lines for vehicles and stationary applications.
Up to 4000V DC or AC, from 40 to 6000A per pole.
Normally open, normally closed, changeover poles in single and multipole configurations

 

Contactors

Üretiçi Ürün Adı Model Özellik
Microelettrica Scientifica Kontaktor

LTHS

Flexible Line, up to 2000V and 1500A/pole
Microelettrica Scientifica Kontaktor

LTC

Compact Line, up to 2000V and 1000A/pole
Microelettrica Scientifica Kontaktor

LTHH/LTE/LTP

Higher Voltage Line, up to 4000V and 1300A/pole
Microelettrica Scientifica Kontaktor

LTNS

Industrial Line, up to 1000V and 1500A/pole
Microelettrica Scientifica Kontaktor

N

Bar mounted Line, up to 1000V and 3000A/pole

 

   

2 flexible/modular product lines for on-board and stationary applications.
Up to 4000V DC or AC, from 800 to 6000A per pole.
Normally open, normally closed, changeover poles in single and multipole configurations.

Disconnectors

Üretiçi Ürün Adı Model Özellik
Microelettrica Scientifica Kontaktör

LTHM/P-U/D

Flexible Line, up to 4000V, 800 or 1500A/pole
Microelettrica Scientifica Kontaktör

LTMP

Modular Line, up to 4000V, 1000 or 2000A/pole
   

Innovative product line as well as an indefinite number of Integrated Functional Unit products that can be customized to any specific requirement with contactors,

disconnectors, resistors, others, for on-board and stationary applications. Up to 4.000V DC or AC, up to 6.000A per pole

Integrated Functional Units

Üretiçi

IFU

Customized Integrated Functional Unit products. Up to 4.000V and 6.000A per pole
Microelettrica Scientifica

LPRC

New modular integrated system for line- and precharge function. Up to 2.000V and 1.000A

 

   

6 product families for vehicles and stationary applications, up to 4000V.
Thermal current rating from 2000 to 10000A, dual voltage arc chutes possible. Optional metal-enclosure/mono- and bidirectional trip setting available.

 

DC High Speed Circuit Breakers

Üretiçi Ürün Adı Model Özellik
Microelettrica Scientifica Devre Kesci 

IR2000

750V/1,5kV, 3.000A Ith, coil or permanent magnet holding, uni and bi-directional tripping
Microelettrica Scientifica Devre Kesci

IR6040

750V/1,5kV/3kV, 4.000A Ith, holding coil, uni and bi-directional tripping, fixed or withdrawable
Microelettrica Scientifica Devre Kesci

IR6040IEEE

Feeder breaker; 800/1.200V, 4.000A Ith, permanent magnet holding, uni and bi-directional tripping, fixed or withdrawable
Microelettrica Scientifica Devre Kesci

IR6080IEEE

Feeder breaker; 800/1.200V, 8.000A Ith, permanent magnet holding, uni and bi-directional tripping, fixed or withdrawable
Microelettrica Scientifica Devre Kesci

IR6040ML

Rectifier breaker; 800/1.200V, 4.000A Ith, mechanical latch holding, uni and bi-directional tripping, fixed or withdrawable
Microelettrica Scientifica Devre Kesci

IR6080ML

Rectifier breaker; 800/1.200V, 10.000A Ith, mechanical latch holding, uni and bi-directional tripping, fixed or withdrawable
Microelettrica Scientifica Devre Kesci

IRA

3000V DC / 3000A Ith, holding coil, unidirectional trip
Microelettrica Scientifica Devre Kesci

IR6040SV

1,5/3kV(dual voltage vers. aval.), 4.000A Ith, coil/permanent magnet holding, uni and bi-directional trip
Microelettrica Scientifica Devre Kesci

IR6025SV

1,5/3kV(dual voltage vers. aval.), 2.500A Ith, coil/permanent magnet holding, uni and bi-directional trip
Microelettrica Scientifica Devre Kesci

IR2000SV

750V/1,5kV (dual voltage vers. aval.), 3.000A Ith, coil/permanent magnet holding, uni and bi-directional trip
Microelettrica Scientifica Devre Kesci

IR6021SV

1,5/3kV(dual voltage vers. aval.), 2.100A Ith, coil/permanent magnet holding, uni and bi-directional trip
   

8 application lines for on-board and stationary use.
Stationary applications (Neutral Grounding, Filter, Load Bank, etc) mostly standardized.
Vehicles applications (Braking, Control) are custom designed for each vehicle.

Resistors

Üretiçi  

Neutral Grounding

Standardized types for 3,6/7,2/12/24/36kV
Microelettrica Scientifica  

Harmonic Filter

Different IP executions for indoor/outdoor installation
Microelettrica Scientifica  

Load Banks

Modular design, convection or forced cooled.
Microelettrica Scientifica  

Starting/Braking/Discharge

Standardized types for motor control
Microelettrica Scientifica  

Line Test

Possible combination with line test contactors
Microelettrica Scientifica  

Compact Resistors

Compact and modern design, low inductance, can be subjected to pulse loads
Microelettrica Scientifica  

Frame Resistors

Flat modular design, high energy absorption capacity, low-inductance versions, can be subjected to pulse loads
Microelettrica Scientifica  

Braking

Convection/forced cooled, roof, undercar or in-vehicle
Microelettrica Scientifica  

Continuous Duty Control

Filter, damping, etc, multifunctional units possible
Microelettrica Scientifica  

Impulsive Duty Control

Crowbar, charging, discharging, also in aluminum-case
   

5 product platforms for stationary applications, with infinite customization possibilities.
Quick application configuration and relay customization service with in-house firmwaring. Control software for relay communication.

Protection Relays

A line

Traditional electronic analogic protective relays

M line

Digital relays for protection, monitoring and control

MC line

Compact digital relays for protection and control

N-Din line

DIN Rail relays for protection, metering and control

Ultra line

Multifunction device for protection, metering & control

Ultra-Ts

Multifunction device for protection, metering & control with Touch Screen

CEI 0-16

Relays in compliance with Italian Standard CEI 0-16

MHCO

High insulation static converter for DC measurement

MHIT

High insulation transducer for DC measurement

DC Protection

Üretiçi Type Description  
Microelettrica Scientifica

U-MLEs-PLv-Ts

D.C. Feeder Manager Relay (double voltage Line Test)  
Microelettrica Scientifica

U-MLEs-PLv

D.C. Feeder Manager Relay (double voltage Line Test)  
Microelettrica Scientifica D.C. Feeder Manager Relay (single voltage Line Test)
  • Ultra-Ts

 

Feeder protection Relays

Üretiçi Type Description  
Microelettrica Scientifica

BF20

Two Phase and Earth Fault Breaker Failure Relay  
Microelettrica Scientifica

BI2/C

Dual Level D.C. Current Relay  
Microelettrica Scientifica

BI20

Two Phase Overcurrent + Earth Fault Relay  
Microelettrica Scientifica

FMR

Feeder Manager Relay  
Microelettrica Scientifica

FMR-Ts

Feeder Manager Relay (Touch Screen)  
Microelettrica Scientifica

FMR-R-Ts

Feeder Manager Relay (Touch Screen) with F79  
Microelettrica Scientifica

FMR-R

Feeder Manager Relay + Autoreclosure  
Microelettrica Scientifica

IM30-AB

Three-Phase Overcurrent and Earth Fault Relay - Dual Setting  
Microelettrica Scientifica

IM30-AP

Three-Phase Overcurrent and Earth Fault Relay  
Microelettrica Scientifica

IM30-B00

Earth Fault Relay - Dual Setting  
Microelettrica Scientifica

IM30-C

Capacitor Overload and Unbalance Protection  
Microelettrica Scientifica

IM30-D

Three-Phase Overcurrent + Directional Earth Fault Relay  
Microelettrica Scientifica

IM30-SA

Three-Phase Overcurrent, Earth Fault and Sensitive Earth Fault Relay  
Microelettrica Scientifica

IM30-SR

Three-Phase Overcurrent, Sensitive Earth Fault and Autoreclose Relay  
Microelettrica Scientifica

M-ARM513

Multi-shot Programmable Single/Three-Phase Autoreclose  
Microelettrica Scientifica

MC0A

Multifunction Zero sequence Overcurrent Earth Fault / Sensitive Earth Fault realy  
Microelettrica Scientifica

MC20

Overcurrent And Earth Fault - Relay  
Microelettrica Scientifica

MC20-R

Overcurrent And Earth Fault + Autoreclosing - Relay  
Microelettrica Scientifica

MC30

Three Phase Overcurrent & Earth Fault Relay  
Microelettrica Scientifica

MFP

Pilot Wire Differential Relay  
Microelettrica Scientifica

N-DIN-F

Feeder Protection Relay  
Microelettrica Scientifica

N-DIN-TO64

D.C. Current Relay With High Sensitivity Hall Effect Transducer  
Microelettrica Scientifica

N-DIN-TO64-RFI

D.C. Current Relay With High Sensitivity Hall Effect Transducer (RFI approved)  
Microelettrica Scientifica

PB0

Dual Level Earth Fault Relay  
Microelettrica Scientifica

PB1

Dual Level Current Relay  
Microelettrica Scientifica

PB2

Dual Level Current Relay  
Microelettrica Scientifica

PB3

Dual Level Current Relay  
Microelettrica Scientifica

UB0

Zero Sequence Overvoltage Relay Desensitised to the Third Harmonic  
Microelettrica Scientifica

UB0/51

Overcurrent Relay  
Microelettrica Scientifica

UB0/A

Earth Fault Current Relay Desensitised to the Third Harm  
Microelettrica Scientifica

UB0/A-TO64

D.C. Current Relay with High Sensitivity Half Effect Transducer  
Microelettrica Scientifica

UB0/ATR

High Impedance Differential Relay  

 

Motor Protection Relays

 
Üretiçi Type Üretiçi Description  
Microelettrica Scientifica

MM30

Microelettrica Scientifica Motor Protection Relay  
Microelettrica Scientifica

MM30-D

Microelettrica Scientifica Motor Protection with Directional Earth Fault  
Microelettrica Scientifica

MM30-W

Microelettrica Scientifica Motor Protection with Voltage & Power control  
Microelettrica Scientifica

MM30-W74

Microelettrica Scientifica Motor Protection with Voltage & Power control + trip coil supervision  
Microelettrica Scientifica

MM30-743

Microelettrica Scientifica Motor Protection with trip coil supervision  
Microelettrica Scientifica

MMR

Microelettrica Scientifica Motor Protection Relay  
Microelettrica Scientifica

N-DIN-MA

Microelettrica Scientifica Motor Protection Relay  

 

Transformer Protection Relays

Üretiçi Type Description  
Microelettrica Scientifica

DTMR

Differential Transformer Relay  
Microelettrica Scientifica

DTMR3-TX

Percentage Biased Differential Relay For 3-Winding Transformers  
Microelettrica Scientifica

IM30-T

Three-Phase Thermal + Overcurrent + Earth Fault Relay  
Microelettrica Scientifica

MD32-T

Percentage Biased Transformer Differential Relay  
Microelettrica Scientifica

MD33-T

Percentage Biased Differential Relay for 3-Winding Transformer  
Microelettrica Scientifica

MTR33

Transformer On-Load Tap-Changer Control Relay  

Generator Protection Relays

Üretiçi Type Description  
Microelettrica Scientifica

GMR

Generator Protection & Management Relay  
Microelettrica Scientifica

IM30-G

Multifunction Generator Protection Relay  
Microelettrica Scientifica

IM30-GOS

Multifunction Protection Relay for Generator OUT-of-STEP Protection  
Microelettrica Scientifica

MD32-G

Percentage Biased Generator Differential Relay  
Microelettrica Scientifica

MG30

Generator Protection and management Relay  
Microelettrica Scientifica

MG30-I

Generator Protection and management Relay  
Microelettrica Scientifica

SCM21

Three Inputs Synchrocheck Relay  
Microelettrica Scientifica

SPM21

Generator Synchronizing Relay  
Microelettrica Scientifica

UB0/100

Relay for 100% Generator Stator Earth Fault Protection  
 

UB0/CR

Rotor Earth Fault Relay  

 

Voltage, Frequency & BusBar Protection Relays

Üretiçi Type Description  
Microelettrica Scientifica

M-HIB3

Percentage Biased Differential Relay for Bus-Bar and Cables  
Microelettrica Scientifica

M-HIV3

Three phase High Impedance Busbar Differential relay with supervision of CT secondary circuits  
Microelettrica Scientifica

M-LIB3

Modular Low-Impedance Bus-Bar Protection  
Microelettrica Scientifica

MC1V

Multifunction Single Phase Overvoltage / Undervoltage Relay  
Microelettrica Scientifica

MC3V

Multifunction Three Phase Overvoltage / Undervoltage Relay  
Microelettrica Scientifica

MC3V-CEI-016 (A70)

Multifunction Three Phase Overvoltage / Undervoltage Relay (CEI Standards)  
Microelettrica Scientifica

MC3V-CEI-021

Multifunction Three Phase Overvoltage / Undervoltage Relay (CEI Standards)  
Microelettrica Scientifica

UFD14

Digital 4-Stage Frequency Relay with df/dt Control  
Microelettrica Scientifica

UFD34

Three-Phase Digital 4-Stage Frequency Relay with df/dt and dv/dt Control  
Microelettrica Scientifica

UM30-A

Three-Phase Voltage, Frequency, Zero Sequence Voltage with Vector Shift Detection  

 

Supervision and Control Relays

Üretiçi Type Description  
Microelettrica Scientifica

BF3

Three Phase Breaker Failure Relay  
Microelettrica Scientifica

MU30

Multifunction Three-Phase Measuring Unit  
Microelettrica Scientifica

MW33

Power Management Relay  
Microelettrica Scientifica

MX7-5

Programmable Interface and Control Module (7 Inputs - 5 Outputs)  
Microelettrica Scientifica

MX7-5S

Programmable Interface and Control Module, with mimic position of C/B (7 Inputs - 5 Outputs)  
Microelettrica Scientifica

MX14-5

Programmable Interface and Control Module (14 Inputs - 5 Outputs)  
Microelettrica Scientifica

RB4

Lock-Out Relay  
Microelettrica Scientifica

RCA

Trip Circuit Supervision Relay  

Accessories

Üretiçi Type Description
Microelettrica Scientifica

MS-GSM (A72)

Remote communication system GSM
Microelettrica Scientifica 14DI Expansion module – 14 Digital Input (for line Ultra & MC)
Microelettrica Scientifica 14DO Expansion module – 14 Output Relays (for line Ultra & MC)
Microelettrica Scientifica CFV-BL Blocking and Intertripping Signal Transmitter
Microelettrica Scientifica CPSC&CF-V Communication Interface Converters
Microelettrica Scientifica EX-IO Expansion module (for line N-DIN)
Microelettrica Scientifica REX-8 Expansion Module for M-Line Relays
Microelettrica Scientifica TA-DIN Current Transformer
Microelettrica Scientifica TAR-DIN Current Transformer
Microelettrica Scientifica TAX Universal Adapting Transformers
Microelettrica Scientifica TO Toroidal Current Transformers
Microelettrica Scientifica TP11 Test Panel and Test Sockets
Microelettrica Scientifica UX10-4 Expansion module – 10 Digital Input + 4 Output Relays (for line Ultra & MC)

 

Application Software

Üretiçi Type Description
Microelettrica Scientifica

MSCom

Relay Interfacing Program - Line "M" and "N-DIN"
Microelettrica Scientifica

MSCom2

Relay Interfacing Program - Line "MC" and "ULTRA"
   

4 product lines for vehicles applications.
High voltage metering and energy measurement of all DC and AC catenary or 3rd rail supply.

DC voltage transducers for Rail and DC Substation use.

 

Metering

Eletrafo

Eletrafo is a compact solution that allows the measurement of the voltage of the catenary line and distributes the information through the whole train

Ecometer DC

Most recent evolution of our innovative on-board metering line. Compact and easy-to-mount solutions for the on-board high accuracy metering and detection of voltage, current and active/reactive energy according to EN 50463

Ecometer AC

Most recent evolution of our innovative on-board metering line. Compact and easy-to-mount solutions for the on-board high accuracy metering and detection of voltage, current and active/reactive energy according to EN 50463

Ecometer AC/DC

Most recent evolution of our innovative on-board metering line. Compact and easy-to-mount solutions for the on-board high accuracy metering and detection of voltage, current and active/reactive energy according to EN 50463

Thepsys

Thepsys is a device that has a diagnostics function able to detect power supply failure or thermocouple break
   

Axial fans for vehicles (direct drive) and industry (direct drive or belt/gear drive) applications. Axial rotors for industry use. Centrifugal fans for on-board applications. ATEX fans and custom designs for industry use.
Silencers and accessories for industry and vehicles applications.

Fans

Üretiçi Ürün Özellik
Microelettrica Scientifica

AF/LA Series

Direct driven axial fans
 

AFT Series

Belt-driven axial fans
 

MAP/AVP/MF/XF Series

High efficiency axial impellers
 

AFH Series

High performances axial fans
 

Centrifugal fan units

Fans mainly used in critical applications, compact design, wide customization
 

OR/COR/ORV Series

Open-running centrifugal fans (plug-fans)
 

CNX/MXF Series

Centraxial and Mixed Flow Fans
 

ATEX Fans

Version for classified areas (Zone 1/21 e 2/22)

 

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