Tetra Heater HT

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Powerful heater
Precise temperature control (20-32 °C)
Robust borosilicate glass
Status LED for easy monitoring
Plastic cap for additional protection

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Variation

HT 25

€

26.

HT 50

€

27.

HT 75

€

28.

HT 300

€

29.

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Description

The Tetra HT Heater Electronic is a fully electronic aquarium heater designed for high precision and reliability. The temperature can be adjusted in a range from 20 °C to 32 °C, making it suitable for aquariums of all types. The robust construction includes a heat- and shock-resistant borosilicate glass tube as well as a protective plastic cap, ensuring long durability. An integrated microprocessor ensures precise temperature control. The 3-stage status LED indicates the operational status and facilitates monitoring. With a 1,6 m long mains cable and two self-adhesive suction cups, flexible placement and secure attachment are guaranteed.

Manual Tetra Heater HT - - download PDF

Features

Electronic heater with temperature adjustment from 20 °C to 32 °C
Integrated microprocessor for precise temperature control
3-stage status LED for monitoring operation
Safety shutdown and shock-resistant borosilicate glass
Plastic cap for impact protection
1,6 m long mains cable for flexible placement
Attachment with two self-adhesive suction cups

Application

The heater is fully submerged in water and secured with the supplied suction cups. The desired temperature can be adjusted using the regulator at the top of the heater. The current operational status is indicated by the status LED: green for inactive, red for heating, and yellow for safety shutdown. It is recommended to disconnect the heater from the mains during aquarium cleaning or water changes.

Technical Specifications

Tetra HT 25
Mains voltage	220 - 240 V AC
Frequency	50/60 Hz
Power consumption	25 W
Recommended aquarium volume	10 - 25 l
Temperature range	20 - 32 °C
Protection class	IPX8

Tetra HT 50
Mains voltage	220 - 240 V AC
Frequency	50/60 Hz
Power consumption	50 W
Recommended aquarium volume	25 - 60 l
Temperature range	20 - 32 °C
Protection class	IPX8

Tetra HT 75
Mains voltage	220 - 240 V AC
Frequency	50/60 Hz
Power consumption	75 W
Recommended aquarium volume	60 - 100 l
Temperature range	20 - 32 °C
Protection class	IPX8

Tetra HT 100
Mains voltage	220 - 240 V AC
Frequency	50/60 Hz
Power consumption	100 W
Recommended aquarium volume	100 - 150 l
Temperature range	20 - 32 °C
Protection class	IPX8

Tetra HT 150
Mains voltage	220 - 240 V AC
Frequency	50/60 Hz
Power consumption	150 W
Recommended aquarium volume	150 - 225 l
Temperature range	20 - 32 °C
Protection class	IPX8

Tetra HT 200
Mains voltage	220 - 240 V AC
Frequency	50/60 Hz
Power consumption	200 W
Recommended aquarium volume	225 - 300 l
Temperature range	20 - 32 °C
Protection class	IPX8

Tetra HT 300
Mains voltage	220 - 240 V AC
Frequency	50/60 Hz
Power consumption	300 W
Recommended aquarium volume	300 - 450 l
Temperature range	20 - 32 °C
Protection class	IPX8

Dimensions

Tetra HT 25
Height	217 mm
Width	30 mm
Diameter	43 mm
Weight	188 g
Maximum immersion depth	800 mm
Cable length	1,6 m

Tetra HT 50
Height	236 mm
Width	30 mm
Diameter	43 mm
Weight	204 g
Maximum immersion depth	800 mm
Cable length	1,6 m

Tetra HT 75
Height	236 mm
Width	30 mm
Diameter	43 mm
Weight	204 g
Maximum immersion depth	800 mm
Cable length	1,6 m

Tetra HT 100
Height	252 mm
Width	30 mm
Diameter	43 mm
Weight	209 g
Maximum immersion depth	800 mm
Cable length	1,6 m

Tetra HT 150
Height	290 mm
Width	30 mm
Diameter	43 mm
Weight	238 g
Maximum immersion depth	800 mm
Cable length	1,6 m

Tetra HT 200
Height	290 mm
Width	30 mm
Diameter	43 mm
Weight	238 g
Maximum immersion depth	800 mm
Cable length	1,6 m

Tetra HT 300
Height	367 mm
Width	30 mm
Diameter	43 mm
Weight	291 g
Maximum immersion depth	800 mm
Cable length	1,6 m

Scope of delivery

Heater head with controls for adjusting the temperature
Glass tube with integrated heating element, identification plate, and status LED
Mains cable with plug
Bracket for mounting
Suction cups for securing the bracket to the aquarium wall

Product Safety Notes

Caution: Electricity

Warning notes:

This device can be used by children aged 3 years and above, as well as by persons with reduced physical, sensory, or mental capabilities or lack of experience and knowledge, if they are supervised or instructed on the safe use of the device and understand the resulting dangers.
Children must not play with the device.
Cleaning and user maintenance must not be carried out by children without supervision.
Before connecting the power plug to the mains, ensure that all housings and connection cables are intact. No modifications must be made.
Only connect the power plug to a professionally installed power outlet. The outlet must be easily accessible and protected by a residual current device (RCD) with a rated residual current of no more than 30 mA.
Immediately disconnect the power plug from the mains if housings or connection cables are damaged.
Do not open housings or make modifications to components.

General notes:

Operate the device only when fully submerged in water; never operate it dry.
Do not bend or crush the connection cable.
Pull only on the plug, not the cable.
Only use original spare parts and accessories.

Handling notes:

Do not allow children to play with packaging materials. There is a risk of suffocation.
Arrange the connection cable so that no one can trip over it.
Check the surface temperature before touching the device. It can become very hot, posing a burn hazard. Allow the device to cool after switching off.
Position the device in its final location in the filled aquarium before switching it on.
Allow the device to cool for approximately 15 minutes in water after switching it off before touching it or placing it outside the aquarium.
Never immerse a hot glass component in water, as it may shatter.
Always disconnect the power plug from the mains before performing any maintenance work on the device to avoid the risk of electric shock.
Wait 15 minutes after switching off the device before touching it to avoid burns.

Tetra

The orientation of Tetra (founded in 1951), one of the most traditional and at the same time most innovative companies in the landscape of German aquaristics, goes far beyond the production of feed for aquarium inhabitants. The perfect interplay of research and quality ensures the highest grades, even according to the IFS standards. Beside of the well known TetraMin or the popular water care products, Tetra offers complete aquarium sets and modern cabinets in 120 countries around the globe. Tetra has been shaping and influencing the modern world of aquaristics for over 70 years with its innovative strength like hardly any other company.