Smart System IO Application Module

IO Application Module Description

IO Application Module

The IO input/output application module for LV circuit breakers is one of the components of ULP architecture. Built in functions and applications enhance control and monitoring needs.

ULP system architecture including IO modules can be built without any restrictions using a wide range of circuit breakers:

  • Masterpact MTZ1/MTZ2/MTZ3/NT/NW circuit breakers

  • PowerPact P- and R-frame circuit breakers

  • PowerPact H-, J-, and L-frame circuit breakers

The IO application module is compliant with the ULP system specifications.
Two IO application modules can be connected to each circuit breaker on the same IMU.

IO Input/Output Interface for LV Circuit Breaker Resources

The IO application module resources are:

  • Six self-powered digital inputs for either NO and NC dry contact or pulse counter.

  • Three bistable relay digital outputs (5 A maximum).

  • One analog input for a Pt100 temperature sensor.


Pre-Defined Applications

Use the nine-position rotary switch on the front of the IO module to select a pre-defined applications. Each position is assigned to a predefined application except position 9, which allows the user to define a specific application by means of the Ecoreach customer engineering tool. The switch is factory set to predefined application 1.

For each pre-defined application the input/output assignment and the wiring diagram are predefined. No additional setting with the customer engineering tool is required.

The IO module and other resources not assigned to the predefined applications are free for user specific applications.

User Applications

The user applications with the corresponding resources are defined by means of the Ecoreach engineering tool. They use the resources not assigned to the predefined applications. User applications can be used for:

  • Protection improvement

  • Circuit breaker control

  • Motor control

  • Energy management

  • Monitoring

24 Vdc Power Supply

The IO module must be supplied with either a 24 Vdc AD or with a 24 Vdc ABL8 RPS power supply.

NOTE: The +/- of the power supply must be connected to the +/- terminals of the IO module. Crossing the polarities may damage the device.


The IO module is a DIN rail mounted device.

IO Application Module Characteristics

General Characteristics

Environmental Characteristics

Conforming to standards

IEC 60950, UL 60950


CE, cULus, EAC

Ambient temperature


-40 to +85°C (-40 to +185°F)


-25 to +70°C (-13 to +158°F)

Relative humidity

5 - 85%

Level of pollution

Level 3

Protective treatment

ULV0 conforming to IEC/EN 60068-2-30

Mechanical Characteristics

Shock resistance

Conforming to IEC/EN 60068-2-27: 15 g / 11 ms, 1/2 sinusoidal

Resistance to sinusoidal vibrations

Conforming to IEC/EN 60068-2-6: 5 Hz < f < 8.4 Hz

Electrical Characteristics


165 mA at 24 Vdc

Resistance to electrostatic discharge

IEC/EN 61000-4-2: 8 kV air discharge, 6 kV contact discharge

Immunity to radiated fields

IEC/EN 61000-4-3: 10 V/m

Immunity to fast transient perturbations

IEC/EN 61000-4-4: 2 kV

Immunity to surges

IEC/EN 61000-4-5: 2 kV common mode

Immunity to conducted radio frequency field

IEC/EN 61000-4-6: 10 V

Physical Characteristics


71.7 x 116 x 70.6 mm (2.82 x 4.57 x 2.78 in.)


DIN rail


229.5 g (0.51 lb)

Degree of protection of the installed IO application module

On the front panel (wall mounted enclosure): IP4x

IO parts: IP3x

Connectors: IP2x


Screw type terminal blocks

Input and Output Characteristics

Digital Inputs

Digital input type

Self powered digital input with current limitations as per IEC 61131-2 type 2 standards (7 mA)

Input limit values at state 1 (close)

19.8–25.2 Vdc, 6.1 - 8.8 mA

Input limit values at state 0 (open)

0–19.8 Vdc, 0 mA

Maximum cable length

10 m (33 ft.)

NOTE: For a length greater than 10 m (33 ft.) and up to 300 m (984 ft.), it is mandatory to use a shielded twisted cable. The shield cable is connected to the IO functional ground of the IO application module.

Digital Outputs

Digital output type

Bistable relay

Rated voltage

250 Vac maximum */ 30 Vdc

Rated carry current

5 A

Contact resistance

30 mΩ

Maximum operating frequency

18,000 Operations/hr (Mechanical)

1800 Operations/hr (Electrical)

Digital output relay protection by an external fuse

External fuse of 5 A or less

Maximum cable length

10 m (33 ft)

Analog Inputs

IO application module analog input can be connected to a Pt100 temperature sensor.


-30 to 200 °C

-22 to 392°F


±2°C from -30 to 20°C

±3.6°F from -22 to 68°F

±1°C from 20 to 140°C

±1.8°F from 68 to 284°F

±2°C from 140 to 200°C

±3.6°F from 284 to 392°F

Refresh interval

5 s

5 s

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