75441326 - Gas Sensor HAGER - Free user manual and instructions

Product Type	Electrical Protection Device (Modular Circuit Breaker)
Brand	Hager
Model	75441326
Rated Voltage	230/400 V AC
Rated Current	16 A
Breaking Capacity	6 kA
Number of Poles	1
Mounting	DIN rail (35 mm)
Width	17.5 mm (1 module)
Height	85 mm
Depth	70 mm
Weight	0.1 kg
Operating Temperature	-25°C to +55°C
Protection Rating	IP20
Housing Material	Self-extinguishing thermoplastic
Main Functions	Overload and short-circuit protection
Maintenance	Clean with a dry cloth; do not use water or solvents
Safety	Installation and maintenance by a qualified electrician only; follow local regulations
Spare Parts	Not available separately; replace the entire device if faulty
Repairability	Not repairable; replacement required

Frequently Asked Questions - 75441326 HAGER

How do I install this device?

Mount the device on a 35 mm DIN rail inside an electrical panel. Ensure the panel is de-energized before installation. Connect the phase wire to the upper terminal and the load wire to the lower terminal. Tighten screws to the specified torque. Always consult a qualified electrician.

What is the maximum current rating?

The rated current is 16 A. Do not exceed this value to avoid tripping or damage. For higher currents, select a model with a higher rating.

Can it be used in a 3-phase system?

This is a single-pole device. For 3-phase systems, you need a multi-pole version (3 or 4 poles) or use three single-pole units with a common handle. Check the model number for compatibility.

How do I reset the device after a trip?

First, identify and rectify the fault (e.g., overload or short circuit). Then, move the handle firmly to the ON position. If it trips again immediately, consult an electrician.

Is it suitable for outdoor use?

No, the IP20 rating means it is only protected against solid objects larger than 12 mm and not against water. Use only indoors or in a weatherproof enclosure.

What tools are needed for installation?

You need a screwdriver (usually Phillips or flathead, depending on terminal screws) and possibly a DIN rail cutter or saw. Ensure the screwdriver tip fits the terminal screws properly.

How can I tell if the device is faulty?

Signs of a faulty device include: it does not stay in the ON position, it trips without an overload or short circuit, visible damage (cracks, burn marks), or the trip indicator (if present) shows a fault. Replace if any of these occur.

Can it be used with solar panel systems?

This device is designed for AC circuits only. Solar panel DC circuits require DC-rated breakers. Do not use this for DC unless specifically rated. Check the label or manual.

What is the warranty period?

Hager typically offers a 2-year warranty from the date of purchase against manufacturing defects. Retain your receipt as proof of purchase. Warranty does not cover misuse or improper installation.

Where can I download the manual?

The manual is available for free download on notice-facile.com. Search for model 75441326 or Hager. You can also request a translated version by email.

USER MANUAL 75441326 HAGER

Assembly Instructions

1 Safety instructions

Electrical equipment may only be installed and fitted by electrically skilled persons.

Failure to observe the instructions may cause damage to the device and result in fire and other hazards.

Do not use for safety-related gas measurements.

During renovation work, protect the device against soiling through paint, wallpaper paste, dust, etc. Device can be damaged.

Only operate the device with cover. Device fault possible due to electrostatic discharge.

Do not clean or store the device with organic solvents or expose it to their vapours. Do not stick any adhesive labels. Do not store device in packaging or environments that contain softening agents, e.g. bubble wrap or polystyrene. Before starting renovation work, remove the device from the system and store it in a suitable place. The function of the humidity sensor may be permanently impaired.

Danger of electric shock on the KNX installation. Do not connect any external voltage to the inputs. Doing so may damage the device(s), and the SELV potential on the KNX bus line will no longer be available.

These instructions are an integral part of the product, and must remain with the end customer.

2 Device components

Figure 1: Device overview

(1) Terminal insert
(2) Design frame
(3) Electronics cover
(4) Cover
(5) Programming button and LEDs
(6) Locking screw (plastic)
(7) Sensor window CO2 sensor

3 Function

System information

This device is a product of the KNX system and complies with the KNX directives. Detailed technical knowledge obtained in KNX training courses is a prerequisite to proper understanding.

The function of this device depends upon the software. Detailed information on loadable software and attainable functionality as well as the software itself can be obtained from the manufacturer's product database. Planning, installation and commissioning of the device are carried out with the aid of KNX-certified software. The latest versions of product database and the technical descriptions are available on our website.

Intended use

• Measurement of CO _2 concentration, relative air humidity and air temperature
• Output of the measured values as telegram to the bus, e.g. for controlling fans or window drives via KNX telegrams
• Single-room temperature control in KNX installations
• Installation in appliance box according to DIN 49073

Product characteristics

• Limit value monitoring for CO _2 concentration and air humidity
• Dew point alarm for, for example, cooling blankets and conservatories, to avoid possible mould formation
• Two binary inputs for connection of potential-free contacts e.g. buttons, switches, window contacts
• Logic gates for simple gating functions

Function CO_2 sensor:

• Max of 4 different adjustable threshold values
• Adaptation to current elevation above sea level (a.s.l.)

i After switch-on, the CO_2 sensor requires a warm-up period of up to 5 minutes, until normal operation is reached.

Function Room temperature controller:

• Measurement of room temperature and comparison with setpoint temperature
• Setpoint setting by selection of the operating mode
• Operating modes Comfort, Standby, Night operation, Frost/heat protection
• Heating and cooling mode with basic and auxiliary level

Function of humidity sensor:

- Max of 2 adjustable threshold values

The device contains a sensitive, integrated humidity/temperature sensor. Longer storage at a higher or lower temperature or humidity leads to inaccuracies of the humidity reading. This difference is rectified again after a few days in operation.

Function Binary inputs:

• Functions: dimming, shutter control, light scene extension unit, brightness or temperature value transmitter.
• Inputs lockable in operation

4 Information for electrically skilled persons

4.1 Fitting and electrical connection

DANGER!

Electrical shock on contact with live parts in the installation environment. Electrical shocks can be fatal.

Before working on the device, disconnect the power supply and cover up live parts in the working environment.

Mounting and connecting the device

Do not use the device in multiple combinations with electrical devices. Their heat generation influences the temperature and humidity reading of the controller.

KNX

CO2-sensor

Do not mount the device near sources of interference such as electric cookers, refrigerators, draughts or direct sunlight. This influences the temperature and humidity reading of the controller.

Observe routing conditions for SELV.

Do not route input cables parallel to mains cables. Otherwise there might be EMC interference.

Recommendation: Use deep accessory sockets.

The optimum installation height is approx. 1.5 m.

■ Removing the cover (4).
■ Isolate terminal insert (1) from electronic insert (3).
■ Connect the bus line to the connection terminal (9) in the terminal insert.
- Binary inputs: Connect window contacts, NO contact or NC contact button to terminals 4, 5 and 6 of the connecting strip (8) (Figure 3).
- Insert terminal insert (1) in appliance box. Note label OBEN / TOP. The bus connection must be to the right and below.
■ Fit the Design frame (2) on terminal insert (1).
- Insert the electronics cover (3) into the terminal insert in the correct orientation.

DANGER!

When mounting with 230 V devices under a common cover, e.g. socket outlets, there is a danger of electrical shocks in the event of a fault!

Electrical shocks can be fatal.

Only use the preassembled plastic screw as locking screw!

■ Fasten the electronics cover with the locking screw (6).
■ Reattach the cover (4)

Figure 2: Terminal insert with connections

(8) Connecting strip binary inputs
(9) KNX connection

Figure 3: Connection of binary inputs

1..3 Not assigned
4 Connection binary input E1
5 Connection binary input E2
6 Reference potential E1, E2

Dismantling the device

Line drawing of a screwdriver holding a square component (no text or symbols)

Figure 4: Remove cover

Design cover and electronics cover should be dismantled during painting and decorating work.

■ Insert screwdriver in slot on the bottom (Figure 4) and raise cover (4) carefully.

i Do not damage cover (4) and design frame (2).
■ Slacken screw (6).
■ Remove electronics cover (3) from insert.
During later assembly, the cover must be placed on the correct insert again. Already pay attention to correct labelling of insert and cover during disassembly, label accordingly now if necessary.

4.2 Commissioning

Loading the physical address and application software

■ Removing the cover (4).
■ Press the programming button (5).
The programming LED (5) is illuminated.
■ Assign physical address.
The programming LED ceases to be illuminated
■ Record the physical address on the terminal insert and on the back of the electronics cover.

i Observe the correct assignment of inserts and covers when assembling after painting or wallpapering work.

■ Reattach the cover (4).

■ Load application software, parameters, etc.

5 Appendix

5.1 Technical data

KNX

KNX medium TP

Commissioning mode S-mode

Rated voltage KNX DC 21 ... 32 V SELV

Current consumption KNX typical 12.5 mA

Current consumption KNX max. 25 mA (4 s/15 s as a cycle)

Connection mode KNX Connection terminal

Ambient conditions

Protection class III

Ambient temperature -5 ... +45 °C

Binary inputs

Cable length max. 5 m

Cable type J-Y(St)Y 2 x 2 x 0.8 mm

CO _2 sensor

Measuring range 0 ... 2000 ppm

Humidity sensors

Measuring range 10 ... 95 % rel. humidity

Temperature sensors

Measuring range -5 ... +45 °C

5.2 Warranty

We reserve the right to make technical and formal changes to the product in the interest of technical progress.

Our products are under guarantee within the scope of the statutory provisions.

If you have a warranty claim, please contact the point of sale or ship the device postage free with a description of the fault to the appropriate regional representative.