Stego EFR 012 Catalog Page

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ELECTRONIC HYGROSTAT

18.02.2020 | Specifications are subject to change without notice. Suitability of this product for its intended use and any associated risks must be determined by the end customer/buyer in its final application.

EFR 012

PRODUCT CATALOG - STEGO, Inc.

> Adjustable & pre-set relative humidity

setpoints

> Compact design

> High switching capacity
> Optical function display (LED)
> DIN rail mountable

The EFR 012 electronic hygrostat senses the relative humidity in an enclosureand turns on a heater at the
set point, helping prevent the formation of condensation in the enclosure. The integrated LED is lit when the
connected device is in operation.

TECHNICAL DATA

Switching difference 5 % RH (±1 % tolerance) – at 77 °F (25 °C) and 50 % RH

Reaction time approx. 5 seconds

Contact type SPDT / change-over contact (relay)

Service life > 50,000 cycles

Max. switching capacity (relay output) 8 A resistive / 1.6 A inductive @ AC 120 V

Max. inrush current AC 16 A for 10 sec.

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

Housing plastic, UL 94V-0, light grey

Mounting clip for 35 mm DIN rail, EN 60715

Mounting position vertical

Operating / Storage temperature +32 to +140 °F (0 to +60 °C) / -4 to +158 °F (-20 to +70 °C)

Operating / Storage humidity max. 90 % RH (non-condensing)

Dimensions 2.54 x 1.65 x 1.5" (64.5 x 42 x 38 mm)

Weight approx. 2.3 oz. (65 g)

Protection type IP20

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

8 A resistive / 1.6 A inductive @ AC 240 V
100 W @ DC 24 V

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solid/stranded

wire – AWG 14 max. (2.5 mm²)

Hygrostat

EFR 012

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Heater

Wiring example

Part No. Operating voltage Setting range Approvals

01245.0-00 AC 230 V, 50/60 Hz 40 to 90 % RH VDE UL File No. E164102 EAC

01245.9-00 AC 120 V, 50/60 Hz 40 to 90 % RH - UL File No. E164102 EAC

01246.0-00 AC 230 V, 50/60 Hz 65 % RH pre-set VDE UL File No. E164102 EAC

01246.0-01 AC 230 V, 50/60 Hz 50 % RH pre-set VDE UL File No. E164102 EAC

01246.9-00 AC 120 V, 50/60 Hz 65 % RH pre-set - UL File No. E164102 EAC

Heater