| Miniature reed switches |
"DOLAM" S.A. is a producer of reed switch used to switch small and medium power (miniature reed switches), to switch high power (power reed switches), to switch high voltage (vacum reed switches) and changeover reed switch.
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Miniature reed switches
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 | Miniature reed switches apply to connect small and medium power.
The high sensitivity ( Pull-in Ampere turns ) of miniature reed switches allows to apply of permanent magnet.
For contact's materials of miniature reed switches are used Rutenium.
"DOLAM" S.A. produces three types of miniature reed switches:- ZM-110/II
- ZM-140/II
- ZM-109/II
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Basic parameters are below. Additional information are attainable in section Documentation » Data sheets.
Parameters of miniature reed switches are tested in standard coil CP-14.
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| Dimension of miniature reed switches |
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all dimension in mm |
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Dimension |
ZM-110/II |
ZM-140/II |
ZM-109/II |
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A |
max 41.8 |
max 44.7 |
max 55.0 |
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B |
max 10.0 |
max 14.2 |
max 20.0 |
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C |
max 1.8 |
max 2.3 |
max 2.54 |
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D |
max 0.47 |
max 0.55 |
max 0.65 |
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| Technical parameter specification of miniature reed switches |
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| Technical data |
Unit |
Type of reed switch |
| ZM-110/II
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ZM-140/II
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ZM-109/II |
| Contact form |
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normally open (type A) |
| Switching power |
max |
W |
10 |
10 |
10 |
| Switching current |
max |
A |
0.5 |
| Switching voltage dc |
max |
VDC |
150 |
100 |
180 |
| Pull-in Ampere turns |
AT |
10÷30 |
10÷20 |
20÷35 |
10÷20 |
20÷40 |
| Breakdown voltage |
min |
VDC |
200 |
200 |
250 |
220 |
280 |
| Contact resistance |
max |
mΩ |
150 |
100 |
150 |
| Operate time |
max |
ms |
0.5 |
1 |
1 |
| Release time |
max |
ms |
0.3 |
0.4 |
0.3 |
| Capacitance |
max |
pF |
0.5 |
0.7 |
0.5 |
| Insulation resistance |
min |
Ω |
109 |
| Resonant frequency |
min |
Hz |
5000 |
4000 |
2600 |
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Note- Should the reed switches be used to switch loads different than resistive we recommend to apply a circuit protecting contacts against exissive wearing out. See in section Support » Aplication.
- Cutting and/or bending leads may cause the increasing of AT-value.
If cutting and/or bending are necessery please to comply with advices in section Support » Aplication.
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ZM-110/II