Specifications; Technical; External Connections; Contact Rating Data - ABB REL 301 Instruction Leaflet

1. 6.

SPECIFICATIONS

1.6.1

Technical

Operating Speed
(from fault detection to trip contact close (60 Hz)
ac Voltage (V
ac Current (I
Rated Frequency
Maximum Permissible ac Voltage (Thermal Rating)
• Continuous
• 10 Second
Maximum Permissible ac Current (Thermal Rating)
• Continuous
• 1 Second
Minimum Operating Current
dc Battery Voltages
Nominal
48/60 Vdc
110/125 Vdc
220/250 Vdc
dc Burdens: Battery
ac Burdens:
Voltage input
Current input
1.6.2

External Connections

Terminal blocks located on the rear of the chassis suitable for #14 square tongue lugs.
Wiring to FT-10 switches suitable for #12 wire lugs.
1.6.3

Contact Rating Data

Trip rated contacts - make & carry 30 amps for 1 second, 10 amps continuously, and break 50
watts resistive or 25 watts with L/R =0.045 seconds. Trip rated contacts are:
• Trips A1, A2
• Programmable Contact OC1
• Close outputs Close 1, Close 2
All other output contacts are non-trip rated - make and carry 3 amps continuously, and break
0.1 amps resistive.
)
Ln
)
n
12 msec (minimum)
26 msec (typical)
60 Hz 70 Volt rms
50 Hz 63.5 Volt rms
1 or 5 Amp
50 or 60 Hz
1.5 x V
Ln
2.5 x V
Ln
3 x I
n
100 x I
n
0.1 x I
n
Operating Range
38-70 Volt dc
88-145 Volt dc
176- 290 Volt dc
7 Watts normal
30 Watts tripping
0.02 VA at 70 Vac/phase
0.15 VA at 5 A/phase
I.L. 40-386.4
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