Littelfuse 201-100-SLD, 201 Pump Controls Series, Single-Channel Seal-Leak Detector, SPDT, 110–120VAC

In stock
SKU: 201-100-SLD
Regular price $192.37
Control voltage
Contact code

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The model 201-100-SLD is an 8-pin plug-in style seal-leak detector to sense seal failures on submersible pumps. A microcontroller-based relay that monitors the shaft seal of a submersible pump motor. A resistive probe is installed in the seal cavity. If water leaks into the pump, the resistance measured by the probe decreases. When the resistance drops below the sensitivity setpoint, the unit will trip and the relay contacts will change state. The unit will automatically reset when a fault is cleared.

Features & Benefits
LED status indicator
Compact plug-in design
DIN rail or surface mountable via octal base

Control Voltage 110/120VAC nominal
Frequency 50/60Hz
Sensitivity 4.7k-100kΩ
Probe Sense Voltage 5vdc pulsed
Output contact Rating SPDT
Pilot Duty 480VA @240VAC
General Purpose 10A @240VAC
Operating Temperature -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 5 W
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity, Radiated 150MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power and controls
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 min.)
UL UL508 (File #E68520)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 44.45 mm (1.75”);
W 60.325 mm (2.375”);
D (with socket) 104.78 mm (4.125”)
Weight 0.7 lb. (11.2 oz., 317.51 g)
Mounting Method DIN rail or surface mount (plug into OT08PC socket)
Socket Available Model OT08PC (UL Rating 600V)
Approvals UL, CE