Product Overview

© 2018 Littelfuse Protection Relays & Controls
www.littelfuse.com/
Protection Relays
Voltage Monitoring Relays
www.littelfuse.com/460
Rev: 1-A-081718
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 6 W
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 4.5 in.-lbs.
Wire Type Stranded or solid 12-20 AWG, one per terminal
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
RFI, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3,
3.5kV input power and controls
Surge
IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance
to a level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 minute)
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 88.9 mm (3.5”); W 52.9 mm (2.08”);
D 59.69 mm (2.35”)
Weight 0.7 lb. (11.2 oz., 317.51 g)
Mounting Method 35 mm DIN rail or Surface Mount
(#6 or #8 screws)
460-MR (manual reset) External NO pushbutton required.
Specifications
Frequency 50/60Hz
Low Voltage (% of setpoint)
Trip 90% ±1%
Reset 93% ±1%
High Voltage (% of setpoint)
Trip 110% ±1%
Reset 107% ±1%
Voltage Unbalance (NEMA)
Trip 2-8% adjustable
Reset Trip setting minus 1% (5-8%)
Trip setting minus 0.5% (2-4%)
460L 6% UB fixed (4.5% reset)
Trip Delay Time
Low, High and
Unbalanced Voltage 1-30 seconds adjustable
460L 4 seconds fixed
Single-Phase Faults
(>15% UB) 1 second fixed
Restart Delay Time
After a Fault 1-500 seconds adjustable
After a Complete Power Loss 1-500 seconds adjustable
Output Contact Rating
Form C
Pilot Duty 480VA @ 240VAC, B300
General Purpose 10A @ 240VAC
Form A & Form B
Pilot Duty 360VA @ 240VAC, B300
General Purpose 8A @ 240VAC
460 SERIES
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products
are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.