81

L

N

N

L

N

L

L N

AC

+ –

DC

STEGO - PRODUCT CATALOGUE

TECHNICAL DATA

Switch difference (temperature)

2 K (±1 K tolerance) at +25 °C (+77 °F), 50 % RH

Switch difference (humidity)

4 % RH (±1 % tolerance) at +25 °C (+77 °F), 50 % RH

Reaction time (humidity)

~ 5 s

Contact type

change-over contact (relay)

Service life

VDE: NO/NC > 15,000 cycles

UL: NO/NC > 30,000 cycles

Max. switching capacity (relay output)

AC 240 V, 10 (1.6) A1

DC 60 V, 0.6 A

Max. inrush current

AC 30 A for 10 s

Optical indicator

LED

Connection

5-pole terminal, clamping torque 0.5 Nm max.:

rigid/stranded² wire 2.5 mm² (AWG 14)

Mounting

clip for 35mm DIN rail, EN 60715

Casing

plastic according to UL94 V-0, light grey

Dimensions

77 x 60 x 43 mm

Weight

~ 0.2 kg

Fitting position

vertical

Operating/Storage temperature

-40 to +60 °C (-40 to +140 °F)

Operating/Storage humidity

< 90 % RH (non-condensing)

Protection type

IP20

Approvals

VDE, UL File No. E164102, EAC

¹ Switching of resistive load (switching of inductive load)

² When connecting with stranded wires, wire end ferrules must be used.

The electronic hygrotherm senses the ambient temperature and relative humidity in an enclosure with electric/

electronic components and turns on a heater (or alternatively a fan) at either set point, helping prevent the

formation of condensation in the enclosure. Due to its wide voltage range the hygrotherm can be utilised anywhere

in the world. The LED integrated in the adjustment knob on the active controller is lit when the connected device

is in operation. The version with an external sensor can be installed anywhere in the control cabinet and enables

precise measurement.

> Temperature and humidity adjustable

> Wide voltage range

> Operating temperature down to -40 °C

> High switching capacity

> Status indicator (LED)

Connection diagram

Example of connection

with integrated sensor

Heater

Hygrotherm

ETF 012

Heater

ELECTRONIC HYGROTHERM

ETF 012

Art. No.

(integrated sensor)

Art. No.

(external sensor, 1 m cable)

Art. No.

(external sensor, 2 m cable)

Operating voltage

Setting range

temperature

Setting range humidity

01230.0-00

01231.0-00

01231.0-01

AC 100 – 240 V, 50/60 Hz (min. AC 90 V, max. AC 265 V)

0 to +60 °C

50 to 90 % RH

01230.9-00

01231.9-00

01231.9-01

AC 100 – 240 V, 50/60 Hz (min. AC 90 V, max. AC 265 V)

+32 to +140 °F

50 to 90 % RH

01230.1-00

01231.1-00

01231.1-01

DC 24 – 48 V (min. DC 20 V, max. DC 60 V)

0 to +60 °C

50 to 90 % RH

Dimensions ETF 012

Dimensions external sensor

Example of connection

with external sensor

Hygrotherm

ETF 012

Heater

REGULATING