microtherm_leaflet_M_eng_0713

Technical data

Tolerance of setting temperature and differential vs. setting temp.

Note: 1. Above list is valid for standard tolerance 2. Special tolerance

1.5K or

2K are available on request

switch type

ratings

MQT 8K

MQT 8H

function

normally closed contact

when temperature is increasing, the contacts will be opened and disconnect the current

normally open contact

when temperature is increasing, the contacts will be closed and activate the current

reset

reset is done automatically

contact configuration

X (normally closed contact)

Y (normally open contact)

X (normally closed contact)

Y (normally open contact)

Option: switch over contact Z (3 leads XZ or YZ)

approval according to
VDE EN 60730-1 /-2-9

response temperature

-10°C ~ +110°C

current / voltage

2.0 A / AC 125 V
1.3 A / AC 250 V

2.0 A / DC 12 V
1.3 A / DC 24 V
0.6 A / DC 48 V

5 A / AC 125 V
3 A / AC 240 V

5 A / DC 12 V
3 A / DC 24 V

0.8 A / DC 48 V

lifetime

10.000 life cycles

approval according to
UL 873

response temperature

-10°C ~ +100°C

-10°C ~ +110°C

current / voltage

2 A / AC 125 V

5 A / AC 125 V

lifetime

10.000 life cycles

30.000 life cycles

ambient temperature range

-30°C ~ +85°C (standard)
-30°C ~ +125°C (special)

use within 60° above the response temperature, no icing and no condensing

contact resistance

< 70 m

withstanding voltage

2.000 V AC/2 sec.

insulation resistance

min. 100 M

vibration resistance

according to JIS-C-0911-1984

constant 50 Hz: 0,2 mm=1G

10 - 55 Hz: 0,35 mm fixed 2 h in X,Y and Z-direction = 0,1G to 2,2G (according to tolerance class)

guaranteed lifetime according to manufacturer

mechanical cycles: 2.000.000
electrical cycles at rated load: 100.000

suitable for use in protection category

I, II

water tightness

waterproof by resin cover

increased waterproof by double sealed construction on request

standard wiring

AWM1015/AWG22 black150mm length <+75°C
AWM3271/AWG22 gray 150mm length >+76°C

AWM1015/AWG20 black150mm length <+75°C
AWM3271/AWG20 gray 150mm length >+76°C

guidelines and norms

WEE 2002/95 EG

RoHS-conformity, REACH-conformity

production according to DIN EN ISO 9001

2 Amp. series MQT 8K and MQT 8H as well as 5 Amp. series M3 and M2

response temperature

-10°C

-1°C

0°C

+50°C

+51°C

+65°C

+66°C

+75°C

+76°C

+110°C

differential

execution

A: 3.5

1.5 (2

5)°C

B: 4.5

1.5 (3

6)°C

C: 6.5

1.5 (5

8)°C

D: 10

2 (8

12)°C

Contact capacity by voltage used and by differential ranking

Standard types

type

MQT 8

low current

applications with

crossbar contact

(only for MQT)

max.

current

voltage

differential

max. current

(100.000

life cycles)

max. current

(100.000

life cycles)

max. current

(100.000

life cycles)

max. current

(100.000

life cycles)

–

DC 48V

A: 3.5±1.5 (2~5)°C

50mA – 0.3A

0.1A – 0.3A

1mA – 49mA

B: 4.5±1.5 (3~6)°C

50mA – 0.3A

0.1A – 0.5A

C: 6.5±1.5 (5~8)°C

50mA – 0.3A

0.1A – 0.8A

D: 10±2 (8~12)°C

50mA – 0.6A

0.1A – 0.8A

AC 250V

DC 24V

A: 3.5±1.5 (2~5)°C

50mA – 0.6A

0.5A – 1.5A

1mA – 49mA

B: 4.5±1.5 (3~6)°C

50mA – 0.9A

0.5A – 2A

C: 6.5±1.5 (5~8)°C

50mA – 1.3A

0.5A – 3A

D: 10±2 (8~12)°C

50mA – 1.3A

0.5A – 3A

AC 125V

DC 12V

A: 3.5±1.5 (2~5)°C

50mA – 1.0A

0.5A – 3A

1mA – 49mA

B: 4.5±1.5 (3~6)°C

50mA – 1.5A

0.5A – 4A

C: 6.5±1.5 (5~8)°C

50mA – 2.0A

0.5A – 5A

D: 10±2 (8~12)°C

50mA – 2.0A

0.5A – 5A

switch

type

illustration

drawing

dimensions ( mm )

technical

Specification

MQT 8K

standard execution, flat (6.4 mm),

with 1 fixing eyelet,

with 2 leads,

44x12.5x6.4mm

option

: execution MQT 8KT

with tab terminals

MQT 8H

standard execution, flat (6,4 mm),

without fixing eyelet,

with 2 leads,

34x12.5x6.4mm

option

: execution MQT 8HT

with tab terminals

standard execution (10.8 mm),

with 2 fixing eyelets, hole distance 60 mm,

with leads: execution X or Y with 2 leads,

68x15.5x10.8mm

option

: execution M3Z with 3 leads

(switch over contact XZ or YZ)

standard execution (7.5 mm),

without fixing eyelets,

with 2 leads,

45.5x16x7.5mm

option

: execution M2F

with fuse installed

Contact types

Ordering and marking example

normally

closed

contact opens when temperature is increasing

normally

closed

contact closes when temperature is decreasing

normally

open

contact closes when temperature is increasing

normally

open

contact opens when temperature is decreasing

Fon: +49 (0)7231 787-0
Fax : +49 (0)7231 787-155
E-Mail: info@microtherm.de
Internet: www.microtherm.de

Microtherm GmbH

Täschenwaldstraße 3
Postfach 1208
D-75112 Pforzheim

Ordering example for standard execution

code letter for differential rate
response temperature and contactat configuration
fixation
type number
type

MQT 8 K 10X C

Microtherm representation office:

Customized products on request.

06.2013/HB Technical subject to change without notice

increasing
temperature

decreasing
temperature

top switchpoint

below switchpoint

permanent line = closed contact

dashed line = open contact

differential

{

RoHS

compliant

product