N01, NK1 and N02 - Thermal-Protectors without insulation cap0 pages

Information 310e
Thermal Protector types N01, NK1 and N02
(for Printed Circuit Board Application)
Application:
The Thermal Protector (TP) Type N01/NK1 (NC) and Type
N02 (NO) with connection pins are specifically designed for
direct installation into printed circuit boards for overheating
protection of heat sensitive electronic components and
circuits.

20
max.
3.4

Design:

φ 10
The Thermal Protector N01/NK1 and N02 are based on the
well-proven mechanism of Thermik’s product series 01 and
02, featuring two solid, non insulated connection wires
either with vertical or horizontal take off. A high
temperature resistant insulation cap insulates the protector
on the terminal side and provides the required distance
between the connection wires. The protectors heat
sensitive side with the marking on it is not insulated
(caution: on voltage potential) for better heat sensitivity.

5.08
all dimensions in mm

Operation:
When the temperature has reached the factory preset value, the bimetallic disc activates the
snap-action disc, which in turn opens the contact (N01/NK1) or closes the contact (N02). Only
after a significant temperature drop, the bimetallic disc resets and causes the contacts to
reclose (N01/NK1) or to reopen (N02).

Features:
Small design
Quick response sensitivity
High pressure stability
Vibration-proof
Very short bounce times
Closed metal housing
Excellent long term performance

: to fit closely built-up circuits
: featured by small protector mass and by the metal
housing with non insulated heat sensitive side
: due to metal housing and steel cover
: up to 100 m/s2 at 10 – 60 Hz in all directions
: < 1 ms
: suitable for impregnation
: reproducible switching temperature values due to the
tempered, electrically and mechanically unstressed
bimetallic disc. Constant contact pressure due to the
snap action disc over the whole temperature range.
Instantaneous switching for a minimal strain of the fine
silver contacts