Monitoring and Control Devices
Introduction
The advantages at a glance
3RS10
3RN1
3TK28
Order No.
3RS17
Page
7/90
3RS10, 3RS11, 3RS20 temperature monitoring relays
For monitoring the temperatures of solids, liquids, and gases
Relays, analog adjustable
• Separate versions for overshoot and undershoot
• For simple monitoring tasks
3RS10,
3RS11
• For PT100 or thermoelements J and K
• Variable hysteresis
Relays, digitally adjustable acc. to DIN 3440
Relays, digitally adjustable for up to 3 sensors
• For two-step or three-step controls
• For monitoring heat generation plants
• For PT100/1000, KTY83/84, NTC or thermoelements
type J, K, T, E, N, R, S, B
3RS10,
3RS11,
3RS20
7/92
7/94
• For simultaneously monitoring several sensors
• Especially suited for monitoring motor winding temperatures
• For PT100/1000, KTY83/84, NTC
3RS10
3RN1 thermistor motor protection
For PTC sensors
• Relays for monitoring motor winding temperatures with
type A PTC sensors
3RN1
7/96
• Integrated with ATEX license
• Closed-circuit principle
• Depending on the version: With short-circuit and open-circuit
detection, zero voltage safety, manual/auto/remote RESET,
1 CO, 1 NO + 1 NC, 2 CO, 1 NO + 1 CO or 2 CO
hard gold-plated
3TK28 safety relays
With electronic enabling circuits
• Permanent function checking
• No wear because switched electronically
• High switching frequency
3TK28 4
7/102
• Long electrical endurance
• Evaluation of solid-state sensors
• Sensor lead up to max. 2000 m
• Cascading possible
• Insensitive to vibrations and dirt
• Compact design, low weight
• Approved for the world market
With relay enabling circuits
• Compact design
• Floating safe outputs
3TK28 2, 3TK28 3 7/105
• Also suitable for press and punch controls
• Can be used up to an ambient temperature of max. 70 °C
With contactor relay enabling circuits
• Floating enabling circuits
• AC-15/DC-13 switching capacity
• Safe isolation
• Long mechanical and electrical endurance
• Certified as a complete unit
• Fault minimization and cost reduction through factory wiring
• Low installation costs
3TK28 5
3TK28 5
7/108
Ch. 6
3RA71 load feeders
with integrated safety functions
• Available in fused or fuseless configuration
• Floating enabling circuits
• AC-1/AC-3 switching capacity
• Certified as a complete unit
• Long mechanical and electrical endurance
• Rated operational voltage up to 690 V
• Safe isolation
3RS17 interface converters
Converters for standard signals and
non-standard variables
• All terminals protected against polarity reversing and
overvoltage up to 30 V
• For electrical isolation and conversion of analog signals
• Short-circuit resistant outputs
• From 6.2 mm width
• Switchable multi-range converters
3RS17
7/112
• Variants with manual/automatic switch for setpoint input or
for the conversion of analog variables into frequency
Siemens LV 1 T · 2006
7/4
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