# Thermostat Switch, Thermal Cut Out, 03EN Series, 50 °C, SPST-NC, Flange Mount

![Product image](https://novapart.co/image/farnell:2428745/)

**URL**: https://novapart.co/products/03EN151044(50/35)/thermostat-switch-thermal-cut-out-03en-series-50-c
**SKU**: 03EN151044(50/35)
**Manufacturer**: MICROTHERM
**Category**: Sensors & Transducers || Sensors || Temperature Sensors || Thermostat Switches
**Price**: €2.0300
**Stock**: 10+
**Lead Time**: 57 days (indicative)

## Description

Switching Temperature:50°C; Reset Temperature:35°C; Contact Operation:Normally Closed; Sensor Terminals:Quick Connect; Sensor Housing:Flange Mount; Contact Rating:16A @ 250VAC; Produc

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (17-Jan-2023) |
| Product Range | 03EN Series |
| Contact Rating | 16A at 250VAC |
| Sensor Housing | Flange Mount |
| Sensor Terminals | Quick Connect |
| Contact Operation | Normally Closed |
| Reset Temperature | 35°C |
| Switching Temperature | 50°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2428745/)

Thermal cut-out Thermostat 

27 

28 29 

## Applications 

~~- Household a liances pp - Electronics - Machiner y el~~ 

## Benefits 

- Up to 100,000 cycles 

- Various terminals on-hand 

- Small tolerances and h steresis available y 

~~° ° - Response temperatures from 0 C up to 260 C~~ 

## **Technical data** 

|**control type**<br>**ratings**|**control type**<br>**ratings**|**control type**<br>**ratings**|**11EN**<br>**03EN**<br>**52N**<br>**60EN1)**|**11EN**<br>**03EN**<br>**52N**<br>**60EN1)**|**11EN**<br>**03EN**<br>**52N**<br>**60EN1)**|**11EN**<br>**03EN**<br>**52N**<br>**60EN1)**|**05EN     15N**|**05EN     15N**|**23EN**|
|---|---|---|---|---|---|---|---|---|---|
|**function**|||automatic||||manual|||
|**version**|||normally closed / normally open||||normally closed|||
|**VDE**|**rated current at 250 Vac ( cos φ 0,95 )**||16 A|16 A|16 A|10 A|16 A|16 A|16 A|
||**switching cycles**||10,000|10,000|10,000|100,000|3,000|6,000|3,000|
||**max. temperature Ta ( steps in 5 K )**||150 °C|150 °C|230 °C2)|150 °C|150 °C|40 °C ... 250 °C|150 °C|
|**UL**|**rated current at 240 Vac ( cos φ 1,0 )**||10 A|10 A|10 A|__|10 A|16 A|10 A|
||**switching cycles**||100,000|100,000|100,000|__|6,000|6,000|6,000|
||**max. temperature Ta ( steps in 5 K )**||150 °C|150 °C|230 °C|__|150 °C|250 °C|150 °C|
|**tolerance**|||Ta<100°C:  ± 3 K / Ta>100°C:  ± 4 K / Ta>140°C: ± 5 K|||||||
|**contact resistance**|||< 30 mΩ|||||||
|**hysteresis / reset temperature**|||Ta<100°C: 10 K ± 4 K / Ta>100°C: 15 K ± 5 K / Ta>140°C: 20 K ± 5 K||||customer-specific|||
|**degrees of protection provided by enclosures (EN 60529)**|||IP00 ( 60EN IP54 )|||||||
|**suitable for use in protection class**<br>~~eS~~|||I, II|||||||
|**certifications**||**VDE**<br>~~eS~~|EN 60730-1 / -2-9|||||||
|||**UL(E43273 / E201152)**<br>~~eS~~<br>~~ee<9~~|UL873 / UL60730-1A / -2-94)|||||||
|||**CSA**<br>~~ee<9~~|C22.2 No. 243)|||||||



1) no certification        2) type 55H up to 260°C       3) different ratings      4) type 15N 

## **Standard types** 

|**type**|**nc**|**no**|**code**|**illustration**|**drawing**<br>**dimensions ( mm )**|**technical**<br>**description**|
|---|---|---|---|---|---|---|
|R28 11EN|1|3|standard<br>dielectric strength<br>2,000 Vac|i|==|terminals 6.3 x 0.8,<br>housing thermosetting<br>plastic 9mm,<br>moving bracket small,<br>capaluminium|
|R28 03EN|1|3|standard<br>dielectric strength<br>2,000 Vac|q|fe)|terminals 6.3 x 0.8,<br>housing thermosetting<br>plastic 12mm,<br>moving bracket small,<br>capaluminium|
|R28 52N|1|3|standard<br>dielectric strength<br>2,000 Vac|- :<br><=<br>a|Loss|<br>16|terminals 6.3 x 0.8,<br>housing ceramic 12mm,<br>moving bracket small,<br>cap aluminium|
|R27 05EN|1||manual<br>dielectric strength<br>1,800 Vac|r.|(2.8)<br>g|terminals 6.3 x 0.8,<br>housing thermosetting plastic,<br>moving bracket small,<br>cap aluminium,<br>resetpin|
|R27 15N|1||manual<br>dielectric strength<br>1,800 Vac|“|(2 44)<br>=<br>3|terminals 6.3 x 0.8,<br>housing ceramic,<br>moving bracket small,<br>cap aluminium,<br>resetpin ceramic|
|R29 23EN|1||manual<br>dielectric strength<br>2,000 Vac|‘and|Ss<br>as|terminals 6.3 x 0.8,<br>housing thermosetting plastic,<br>moving bracket small,<br>cap aluminium,<br>resetpin|
|R28 60EN|1|3|tight against humidity<br>dielectric strength<br>1,800 Vac|S<br>=|“7|lead wire 1.25mm2,<br>housing thermosetting plastic,<br>fix bracket,<br>cap aluminium,<br>degree ofprotection IP54|



**Fixings** 

|**code**|**used in type**|**illustration**<br>~~2~~|**drawing**<br>**dimensions ( mm )**<br>~~;oo~~|**technical**<br>**description**<br>~~oo~~|
|---|---|---|---|---|
|4<br>~~a~~|R27, R28, R29<br>~~a~~|~~2~~|Kh°<br>C32x37<br>oy<br>D<br>~~vQ<e~~<br>~~;oo~~<br>LZ)|moving bracket, small<br>~~oo~~|
|3<br>~~a~~|R27, R28, R29<br>~~a~~|~~2~~|~~v Q <e~~<br>~~; oo~~<br>GB2x 37<br>Sex<br>IS|moving bracket<br>~~oo~~|
|S|R27, R28, R29||ows |g<br>|<br>|| ms|stud of<br>M5 x 6 brass, SW17<br>(also other variations<br>available)|
|B (+A)|R27, R28, R29||execution of drawing: 135 deg<br>. OS<br>93.2%x42<br>O32<br>©}er<br>NY|fix bracket<br>possible angles:<br>0 / 45 / 90 / 135 deg|



**==> picture [81 x 7] intentionally omitted <==**

**----- Start of picture text -----**<br>
execution of drawing: 135 deg<br>**----- End of picture text -----**<br>


## **Terminals** 

|**code**|**used in type**|**illustration**|**drawing**<br>**dimensions ( mm )**|**technical**<br>**description**|
|---|---|---|---|---|
|brass: 05 (0 deg)<br>brass: 10 (45 deg)<br>brass: 06 (90 deg)<br>steel: 95 (0 deg)|R27, R28, R29||34<br>(8<br>:|terminals 4.8 x 0.5<br>brass nickel plated up to<br>Tamax. 150°C<br>>150°C steel nickel plated<br>also available: angle 45 / 90 deg|
|brass: 45 (0 deg)<br>brass: 46 (90 deg)|R27, R28, R29||ea<br>(15.5)<br>wwaHt<br>ol<br>(i|terminals 4.8 x 0.8<br>brass nickel plated up to<br>Tamax.150°C<br>also available: angle 90 deg|
|brass: 03 (0 deg)<br>brass: 09 (45 deg)<br>brass: 04 (90 deg)<br>steel: 93 (0 deg)<br>steel: 94 (90 deg)|R27, R28, R29||(32.9)<br>3<br>(15,5)<br>ee=ama|terminals 6.3 x 0.8<br>brass nickel plated up to<br>Tamax. 150°C<br>>150°C steel nickel plated<br>also available: angle 45 / 90 deg|
|00|R27, R28||© 4)<br>f|solder terminals<br>Tamax. 140°C|
|41 (0 deg)<br>42 (90 deg)|R27, R28, R29||(27.5)<br>(15.5)|solder terminals,<br>nickel plated,<br>also available: angle 90 deg<br>Tamax. 140°C|
|SA|R27, R28||5<br>:|PCB terminals<br>solder terminals<br>Tamax. 140°C|



_| ~~ee~~ **Caps** 

Cap Code 1 in standard execution (Ta 50°C – 199°C), material aluminium 

Cap Code T (Ta 0°C – 50°C and Ta ≥ 200°C and all normally open types), material aluminium 

Deviations from standard controls (caps, terminals, fixings) on request. 

Especially for electronic applications with voltage 6…120 Vac / 6…30 Vdc and current 10…100 mA,  there are switches with crossbar- contacts available. 

Controls as single operation device (SOD) up to 150°C and reset temperature minus 35°C are available (type 81ES). 

## **Ordering and marking example** 

## **Ordering example** 

**==> picture [277 x 157] intentionally omitted <==**

**----- Start of picture text -----**<br>
R28  03     E      N      1      5      T     03     4    50±3  40±4<br>reset temperature<br>response temperature<br>fixing code<br>terminal code<br>cap code<br>housing material (2 ceramic / 5 plastic)<br>contact execution (1 normally closed / 3 normally open)<br>type of contact (N normal contact / P low current)<br>European version<br>base type<br>Microtherm type<br>**----- End of picture text -----**<br>


## **Marking example** 

**A100** norm. closed (B norm. open) response temperature **03EN XXXX** type manufacture code **XXXX** date of manufacture 

**==> picture [22 x 15] intentionally omitted <==**

**----- Start of picture text -----**<br>
RoHS<br>compliant<br>product<br>**----- End of picture text -----**<br>


## Representation office: 

**Microtherm GmbH** Fon: +49 (0)7231 787-0 Täschenwaldstraße 3 Fax : +49 (0)7231 787-155 P.O. Box 1208 E-Mail: info@microtherm.de D-75112 Pforzheim Internet: www.microtherm.de 

Deviations from standard controls on request. 

03.2014-HB   Technical subject to change without notice 



## Links

- [View this product on Novapart](https://novapart.co/products/03EN151044(50/35)/thermostat-switch-thermal-cut-out-03en-series-50-c)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/microtherm/03en151044-50-35/thermal-switch-nc-50deg-c-flange/dp/2428745)
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