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Número de pieza S1MS
Descripción Electronic Monitoring Relays
Fabricantes Pilz 
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Electronic Monitoring Relays
Thermistor monitoring
S1MS
Farnell codes: 4439259-9260-9272
Technical Details
S1MS
The S1MS termistor monitoring relay
is used in temperature monitoring
circuits in accordance with
EN 44081, 06/80 to protect motors,
generators, storage areas etc. from
overheating
Features
q For DC and AC supplies
q Normally energised mode
q Automatic reset
Approvals
S1MS
q
q*
q*
* Pending for 400 V AC version
Electrical data
Supply voltage
Tolerance
Power consumption
Switching capability in accordance with
EN 60947-4-1, 10/91
EN 60947-5-1, 10/91
Output contacts
Contact material
Contact fuse protection in accordance
with EN 60947-5-1, 10/91
Measuring circuit
Delay on energisation
Response value
Release value
Resistance at 20 °C
Mechanical data
Max. cable cross section of ext. conductor
Dimensions (H x W x D)
Weight
Description
The thermistor monitoring relay is
enclosed in an S-95 slimline
housing. There are 5 AC versions
available and one version for AC/DC
operation.
Features:
q Relay outputs: 2 auxiliary
contacts (2 C/O)
q Measuring circuit for connecting
a temperature sensor (PTC-
resistor) up to Rmax 1.5 kW)
q Automatic reset
q LED display for supply voltage
and fault
AC: 48, 110, 120, 230, 400 V
AC/DC: 24 V
85 ... 110 %
AC: approx. 3.5 VA, DC: 2 W
AC1: 240 V/0.1 ... 5 A/1200 VA
DC1: 24 V/0.1 ... 5 A/120 W
AC15: 230 V/2 A; DC13: 24 V/1.5 A
2 auxiliary contacts (2 C/O)
AgCdO, 3 µm gold plating for low-load
range 1-50 V/1-100 mA
Max. 6 A quick or max. 4 A slow
Approx. 500 ms
3.6 kW ± 10 %
1.8 kW ± 10 %
max. 1.5 kW
1 x 4 mm2 or 2 x 1.5 mm2
single core or multi-core with crimp
connectors
87 x 22.5 x 122 mm
AC: 180 g; DC: 130 g
A temperature sensor is connected
to the S1MS measuring circuit. If the
temperature exceeds a defined
value, i.e. the resistance of the
temperature sensor reaches the
response value, the output contacts
switch. Contacts 11-14 and 21-24
open, contacts 11-12 and 21-22
close. If temperature falls once
more, i.e. the resistance of the
temperature sensor reaches the
release value, the auxiliary contacts
automatically switch again. The unit
is ready for operation.
The S1MS meets the following
safety requirements:
q Operates to normally energised
mode
q Protecting the system to be
monitored is guaranteed if the
following cases occur:
- voltage failure
- coil defect
- wire break
4
Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland
Telefon +49 (7 11) 34 09-0, Telefax +49 (7 11) 34 09-1 33, E-Mail: [email protected]
NSG-D-2-126-05/00

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