DUA52C724 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – Monitoring Relays DC Under Voltage

Monitoring Relays
DC Under Voltage
Type DUA52
• DC undervoltage monitoring relay
• Measuring if power supply is below the set level
• Measures on own power supply
• Measuring ranges: 8 - 28 V DC and 38 - 58 V DC
• Adjustable hysteresis: 4 to 50%
• Output: 5 A SPDT NE relay
• For mounting on DIN-rail in accordance with
DIN/EN 50 022
• 17.5 mm housing (DIN 43880)
• LED indication for relay and power supply ON
Product Description
Ordering Key
DUA52 is a voltage monitor-
ing relay that measure its own
power supply. The measuring
ranges are 8-28 VDC and 38-
58 VDC. It has separate
potentiometers for setpoint
and hysteresis. Typical appli-
cations are monitoring of
backup batteries, batteries on
diesel generator sets and the
like.
Housing
Function
Type
Item number
Output
Power supply
DUA 52 C 724
Type Selection
Mounting
Output
DIN-rail
DIN-rail
SPDT
SPDT
Measuring range
8 to 28 VDC
38 to 58 VDC
Input Specifications
Input (voltage level)
Measuring ranges
Direct
48 VDC
12 to 24 VDC
Terminals A1, A2
Measures on own power
supply
Level
38 to 58 VDC
8 to 28 VDC
Supply : 12/24 VDC
DUA 52 C 724
Supply: 48 VDC
DUA 52 C 748
Output Specifications
Output
Rated insulation voltage
SPDT relay
250 VAC
Contact ratings (AgSnO2)
Resistive loads
AC 1
DC 12
Small inductive loads AC 15
DC 13
µ
5 A @ 250 VAC
5 A @ 24 VDC
2.5 A @ 250 VAC
2.5 A @ 24 VDC
Mechanical life
≥ 30 x 10⁶ operations
Electrical life
≥ 10⁵ operations
(at 8 A, 250 V, cos ϕ = 1)
Operating frequency
≤ 7200 operations/h
Dielectric strength
Dielectric voltage
2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 µs)
Supply Specifications
Power supply
Rated operational voltage
through terminals:
A1 and A2
724
748
Dielectric voltage
Dielectric voltage
Supply to output
Rated operational power
Overvoltage cat. III
(IEC 60664, IEC 60038)
8 to 28 VDC
38 to 58 VDC
None
2 kV
1.5 W
Specifications are subject to change without notice (09.10.06)
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