LITTELFUSE STARTCO

Littelfuse Startco Powr-Gard

In 2008 Littelfuse, Inc. purchased Startco Engineering Ltd. The company, which is based in Saskatoon, Saskatchewan, is a recognized leader in ground-fault protection products and custom-power distribution centers that are used in industrial manufacturing and mining applications. Littelfuse acknowledged that the acquisition of Startco will strengthen their position within the industrial protection business and growing mining industry with Startco’s line of ground-fault and motor protection relays.

One of Littelfuse Startco’s main products is the Protection Relay which includes a comprehensive line of motor and pump protection relays, arc-flash relays, ground fault relays, feeder protection, pump controllers, time delay relays, flashers and tower lighting, and more to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from injury due to electrical faults. Professionals in construction, manufacturing, mining, oil & gas, solar, and many more industries rely on Littelfuse Startco for rugged, lasting protection for their designs and critical applications.

Arc Flash Relays are an effective defense against dangerous arc flash events since they can detect an arc flash in less than 1 millisecond. These relays provide:

A redundant internal trip path with two internal trip paths for added reliability
Health monitoring which continuously monitors connection to trip coil to ensure path is intact
Reliable Light Detection with two types of light sensors (point and fiber-optic) for different application
Upstream tripping ability if the local breaker fails to clear the fault
Optional current detection for fault verification to avoid nuisance tripping
Tie breaker tripping of both incoming feeder and tie breaker when arc is detected
Zone tripping give the ability to trip 2 separate zones with 1 relay

Most of Littlefuse Startco’s products are manufactured in Canada with the exception of SE-105, SE-107, and SE-325, which are now manufactured in the United States.

Product Image

Catalog #

Description

Price

3-PHASEVOLT MONITOR he 102A series is a three-phase, auto-ranging, dual-range voltage monitor that protects 190–600 V ac, 50*/60 Hz motors regardless of size. This monitor provides a user selectable nominal voltage set point and will automatically select between the 200 V and 400 V range. A unique micro controller-based voltage and phase-sensing circuit constantly monitors the three-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The 102A monitor includes advanced, single LED diagnostics with five different light patterns that distinguish between faults and normal conditions. LED indications include normal operation, power-up restart delay, reverse-phase trip, unbalance/single-phase trip, and high- or low-voltage trip. Applications • Fan motors • Air conditioners • Compressors • Heat, well, and sump pumps • Small conveyer motors

$285.94

5.6V, 5W Termination 5 W axial-lead ground-check termination.

$6.59

3-PHASE VOLT MON/ 38 Description The 350 series is a heavy-duty voltage monitor. This product should be used when high current relays or dual contacts are required, or 480 V controls are used. Since the 350 series uses heavy-duty relays, it comes in fixed voltage range models rather than a dual auto-ranging version like the model 250. The 350200 has a 15 A general purpose contact. The 350400 provides a SPDT (Form C) relay rated to switch up to 600 V, allowing the use of 480 V controls, eliminating the need for a control power transformer to step the voltage down to 120–240 V. Several DPDT (two Form C contacts) relay models are also available. The 350 microcontroller-based family of products are low cost yet highly advanced solutions to heavy-duty problems. The 350 includes advanced single LED diagnostics. Five different light patterns distinguish faults and normal operating conditions. Other options such as high voltage trip and adjustable restart delay are available. Features & Benefits FEATURES BENEFITS Proprietary microcontroller based circuitry Constantly monitors 3 phase voltage to protect against harmful line conditions, even before the motor is started Advanced LED indication Provides diagnostics which can be used for troubleshooting and to determine relay status Adjustable restart delay (-2 models) settings Allows staggered start up of multiple motors, after a fault, to prevent a low voltage condition 600 V rated relay contacts available on some models Eliminates the need for a control transformer to step voltage down to 120–240 V for a control circui

$304.62

1-PH VOLT MONITOR Description The 50R series is a single-phase voltage monitor with a voltage-sensing circuit that constantly monitors the single-phase power for a low-voltage condition. When a harmful condition is detected, the MotorSaver® deactivates its output relay after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions. This monitor is used in a variety of applications such as compressors, air conditioners, heat pumps, well pumps, sump pumps, and small conveyer motors

$193.10

3-PH VOLTAGE MONITOR Description The DLMU Series is a universal voltage, 3-phase voltage monitor. It continuously measures the voltage of each of the three phases with micro-controller accuracy and compares the value to preset trip points. It separately senses phase reversal and loss; over, under and unbalanced voltages; and over or under frequency. Protection is assured during periods of large average voltage fluctuations or when regenerated voltages are present. The unit trips within 200ms when phase loss is detected. Adjustable time delays are included to prevent nuisance tripping and short cycling of sensitive equipment. The isolated, 10A, SPDT and 2A alarm output relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage unbalance, and time delays are knob adjustable. The phase loss set point and the acceptable frequency range are fixed. Both delta and wye systems can be monitored; no connection to neutral is required. Operation Upon application of line voltage, the output is de-energized and the restart delay begins. If all the 3-phase voltages are within the acceptable range, the output energizes at the end of the restart delay. The micro-controller circuitry automatically senses the voltage range, and selects the correct operating frequency (50 or 60Hz). The over and under voltage trip points are set automatically. When the measured value of any phase voltage exceeds the acceptable range limits (lower or upper) the trip delay begins. At the end of the trip delay the output relay de-energizes. If the phase voltage returns to an acceptable value before the trip delay expires, the trip delay is reset and the output remains energized. Under, over, and unbalanced voltages plus over or under frequency must be sensed for the complete trip delay before the unit trips. The unit trips in 200ms when phase loss or reversal are sensed. The unit will not energize if a fault is sensed as the line voltage is applied. Reset: Reset is automatic upon correction of the voltage or frequency fault or phase sequence

$282.20

TIME-DELAY RELAY DSTUA3 24 - 240VAC Terminal Blocks Description
The DSQU and DSTU Series of 17.5 mm, switch adjustable,
universal solid-state timers offer multiple functions, voltages,
and time delay ranges. Choose one of 5 functions and 4 time
delay ranges via 4 selection switches located on face of the unit.
Six switches adjust the time delay through the selected range.
The DSQU Series has quick connect terminals and the DSTU
Series has terminal blocks

$197.36

TIME DELAY RELAY The DSQU and DSTU Series of 17.5 mm, switch adjustable, universal solid-state timers offer multiple functions, voltages, and time delay ranges. Choose one of 5 functions and 4 time delay ranges via 4 selection switches located on face of the unit. Six switches adjust the time delay through the selected range. The DSQU Series has quick connect terminals and the DSTU Series has terminal blocks.

$173.07

24V CURRENT SENSOR The ECS Series of single-phase AC current sensors is a universal, overcurrent or undercurrent sensing control. Its built-in toroidal sensor eliminates the inconvenience of installing a stand-alone current transformer. Includes onboard adjustments for current sensing mode, trip point, and trip delay. Detects over or undercurrent events like locked rotor, loss of load, an open heater or lamp load, or proves an operation is taking place or has ended. Operation Input voltage must be supplied at all times for proper operation. When a fault is sensed throughout the trip delay, the output relay is energized. When the current returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then corrected before the trip delay is completed, the relay will not energize and the trip delay is reset to zero. Adjustment Select the desired function, over or under current sensing. Set the trip point and trip delay to approximate settings. Apply power to the ECS and the monitored load. Turn adjustment and watch the LED. LED will light; turn slightly in opposite direction until LED is off. Adjustment can be done while connected to the control circuitry if the trip delay is set at maximum. To increase sensitivity, multiple turns may be made through the ECS’s toroidal sensor. The appropriate trip point range is determined by multiplying the amperage load by the number of turns/passes through the toroidal sensor. When using an external CT, select a 2VA, 0-5A output CT rated for the current to be monitored. Select ECS adjustment range 0. Pass one secondary wire lead through the ECS toroid and connect the secondary leads together.

$149.98

CURRENT SENSOR The ECS Series of single-phase AC current sensors is a universal, overcurrent or undercurrent sensing control. Its built-in toroidal sensor eliminates the inconvenience of installing a stand-alone current transformer. Includes onboard adjustments for current sensing mode, trip point, and trip delay. Detects over or undercurrent events like locked rotor, loss of load, an open heater or lamp load, or proves an operation is taking place or has ended. Operation Input voltage must be supplied at all times for proper operation. When a fault is sensed throughout the trip delay, the output relay is energized. When the current returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then corrected before the trip delay is completed, the relay will not energize and the trip delay is reset to zero. Adjustment Select the desired function, over or under current sensing. Set the trip point and trip delay to approximate settings. Apply power to the ECS and the monitored load. Turn adjustment and watch the LED. LED will light; turn slightly in opposite direction until LED is off. Adjustment can be done while connected to the control circuitry if the trip delay is set at maximum. To increase sensitivity, multiple turns may be made through the ECS’s toroidal sensor. The appropriate trip point range is determined by multiplying the amperage load by the number of turns/passes through the toroidal sensor. When using an external CT, select a 2VA, 0-5A output CT rated for the current to be monitored. Select ECS adjustment range 0. Pass one secondary wire lead through the ECS toroid and connect the secondary leads together.

$152.98

10A 120V CURRENT SENSOR

$232.20

CURRENT SENSOR Description
The ECSW Series of single-phase, AC window, current sensors
includes adjustable overcurrent and undercurrent trip points.
Detects locked rotor, jam, loss of load, an open heater or
lamp load, a broken belt, or loss of suction. LED’s aid in trip
point adjustment and provide fault indication. The built-in
toroidal sensor eliminates the need for an external current
transformer. The output can be electrically latched after a fault,
or automatically reset. Remote resetting of a latched output
by removing input voltage. The unit includes switch selectable
zero current detection and normally de-energized or energized
output operation. Time delays are included to improve operation
and eliminate nuisance tripping

$326.57

CURRENT TRANSFORMER Description The ELCT series is a sensitive current transformer with integrated flux conditioner used with Littelfuse relays to detect low levels of earth-leakage current.

$610.50

CT 100:1 WITH FLUX C Description The ELCT series is a sensitive current transformer with integrated flux conditioner used with Littelfuse relays to detect low levels of earth-leakage current.

$569.01

RES SENSING 20K 1kV Used on systems up to 1 kV (continuous duty)

Sensor Resistor Datasheet
ER-600VC Diagram

$652.83

TIME DELAY RELAY 120VAC Description
The ESDR Series offers independent time adjustment of both
delay periods. Adjustment options include fixed, onboard or
external adjust. The ESDR is recommended for air drying,
automatic oiling, life testing, chemical metering and automatic
duty cycling. This series is designed for general purpose
commercial and industrial applications where a small, cost
effective, reliable, solid-state timer is required. The factory
calibration for fixed time delays is <±5%. The repeat accuracy,
under stable conditions, is 0.1% of the selected time delay.
This series is designed for input voltages of 12VDC to 230VAC
in five ranges. Time delays of 0.1 seconds to 1000 minutes are
available in six ranges. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated to
protect the electronic circuitry.
Operation (Recycling - ON Time First)
Upon application of input voltage, the output energizes and
the T1, ON time begins. At the end of the ON time, the output
de-energizes and the T2, OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the T2 OFF time begins. At the
end of the OFF time, the output energizes and the T1 ON time
begins. At the end of the ON time, the output de-energizes and
the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay

$131.60

1A 120V TIMER RELAY

$131.60

120V AC FLASHER

$117.25

DC FLASHER 3A 24VDC Description
The FS200 Series may be used to control inductive,
incandescent, or resistive loads. Factory fixed flash rate of 45
or 90 FPM or may be ordered with a fixed custom flash rate
ranging from 10 to 180 FPM. Encapsulation provides protection
against shock, vibration, and humidity. Uniform performance,
high inrush current capability, and low RFI, make this series ideal
for general industrial applications.
Operation
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2.

$130.59

ADJUSTABLE FLASHER

$157.72

DIGI-TIMER RELAY Description The KSD3 Series Digi-Timer is a cost effective approach for ON/OFF recycling applications. The on time is equal to the off time. An adjustment of the RT will change the time delays of both on and off times. This series is designed for general purpose commercial and industrial applications where a small, cost effective, reliable, solid-state timer is required. The factory calibration for fixed time delays is within 5% of the target time delay. The repeat accuracy, under stable conditions, is 0.5% of the selected time delay. This series is designed for popular AC and DC voltages. Time delays of 0.1 seconds to 1000 minutes are available in 6 ranges. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry.Operation (Recycling Flasher - ON Time First)Upon application of input voltage, the output energizes and the T1, ON time begins. At the end of the ON time, the output de-energizes and the T2 OFF time begins. At the end of the OFF time, the output energizes and the cycle repeats as long as input voltage is applied. Reset: Removing input voltage resets the output and time delays, and returns the sequence to the ON time.Operation (Recycling Flasher - OFF Time First)Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of the ON time the load de-energizes, and the cycle repeats until input voltage is removed.Reset: Removing input voltage resets the output and time delays and the sequence to the OFF time

$76.79

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