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Littelfuse 102A Three-Phase Voltage Monitor Restart Delay

Price: $136.08
Quantity:
+ -
Usually ships within 1 week
SKU: MSR102A


Shipping Weight:
2.0 LBS
Shipping Dimensions
Length: 6 In
Width: 6 In
Height: 10 In
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Littelfuse 102A Voltage Monitor Product Description

The Model 102A is an auto-ranging voltage monitor designed to protect 3-phase motors regardless of size. It is used on 190-400 VAC, 50 to 60 Hz motors to prevent damage caused by single phasing, low voltage, phase reversal, or voltage unbalance.

Littelfuse 102A Voltage Monitor Typical Applications

  • Fans
  • Compressors
  • Air Conditioners
  • Heat Pumps
  • Well Pumps
  • Sump Pumps
  • Small Conveyor Motors

Littelfuse 102A Voltage Monitor Features

  • Universal Range From 190-480 VAC, 50/60 Hz, Provides the Versatility Needed to Handle Global Applications.
  • Bicolor LED Indicator Light is Green in Normal Conditions and Red During Trip Conditions.
  • Compact Design Saves Precious Panel Space.
  • Microcontroller-Based Design Provides Better Accuracy and Higher Reliability Than Analog Designs.
  • Transient Protected to Meet IEEE 587 Standards and Stand up Under Tougher Conditions.
  • 10A @ 240 VAC General Purpose Relay can Switch Most Loads.
  • Detects Single-Phase Condition Regardless of Regenerated Voltages

Littelfuse 102A Voltage Monitor Specifications

3-Phase Line Voltage . . . . . . . . . . . . 190 to 480 VAC

Frequency . . . . . . . . . . . . . . . . . . . . . 50 or 60 Hz

Low Voltage (% of set point)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 90%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . . 93%

Voltage Unbalance (NEMA)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 6%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . . 4.5%

Trip Delay Time

  • Low/High Voltage . . . . . . . . . . . . . . . . 4 seconds (standard)
  • Unbalance & Phasing Faults . . . . . . . 2 seconds

Restart Delay Time

  • After a Fault . . . . . . . . . . . . . . . . . 2 seconds (standard)
  • After a Complete Power Loss. . . . . . . 2 seconds (standard)

Output Contact Rating

  • SPDT - 1 Form C. . . . . . . . . . . . . . . . . . . . . . . . 480 VA @ 240 VAC Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 10A @240 VAC General Purpose

Temperature Range

  • Operating . . . . . . . . . .-40° to 70°C (-40° to 158°F)
  • Storage . . . . . . . . . . . . -40° to 80°C (-40° to 176°F)

Trip & Reset Accuracy . . . . . . . . . . . ±1%

Power Consumption . . . . . . . . . . . . . 5 Watts (Max.)

Terminal Torque . . . . . . . . . . . . . 7 in.-lbs

Wire Size . . . . . . . . . . . . . 12-18AWG

Electrostatic Discharge (ESD) . . . . . . . . . . . . IEC 61000-4-2, Level 3, 6kV contact, 8kV air

Fast Transient Burst . . . . . . . . . . . .IEC 61000-4-4, Level 3, 4kV input, 2kV input/output

Transient Protection (Internal) . . . . . . . . . . . . IEC 61000-4-5; 1995 ±6kV

Safety Marks

  • UL . . . . . . . . . . . . . UL508 (File #E68520)
  • CSA . . . . . . . . . . . . 22.2 No. 14 (File #46510)
  • CSA . . . . . . . . . . . . IEC 60947-6-2

Weight . . . . . . . . . . . . . . . . . . . . . . . . 16.8 oz.

Mounting Method . . . . . . . #8 screws

*Note: 50 Hz will increase all delay timers by 20%.


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SymCom Warranty

SymCom Limited Warranty

Terms and Conditions of Sale

Effective January 1, 2009 General Remarks: These Terms and Conditions of Sale apply to all sales and deliveries effected by SymCom. Any terms or conditions on the part of the purchaser that are contrary to these shall not be binding on SymCom, even if they form the basis of the order. Prices: Subject to change without notice. Minimum order is one hundred-fifty dollars ($150.00), excluding shipping charges. Terms: Net 30 days from ship date with approved credit. New customers requesting trade credit must submit a credit application prior, and receive approval prior to an order being placed in production. Handling Fee: A $5.00 handling fee will be assessed on each order. Delivery: Buyer's delivery schedule will be met to the best of SymCom's ability. SymCom reserves the right to make partial shipments on any order. SymCom is not responsible for shipping errors on behalf of the carrier. Freight: All sales are F.O.B., SymCom, Inc., Rapid City, SD. Shipments will be made by the transportation method selected by the Buyer whenever practical. Warranty: SymCom warrants its standard products against defects in material or workmanship for a period of five (5) years from the date of manufacture. All third-party products are warranted by their manufacturer and are handled as a pass-through warranty by SymCom. All custom and private labeled products are warranted for eighteen (18) months unless otherwise stated in writing. The liability of SymCom is limited, at its option, to replace, repair, or credit at the purchase price, for any devices which are returned during the warranty period and which prove to be defective. This warranty constitutes SymCom's sole liability here under and is in lieu of any other warranty expressed, implied or statutory, written or oral, including without limitation, any implied warranties of merchantability or fitness for a particular purpose and supersedes any representations made by any person which are inconsistent with or expand the terms set forth in this document. No person is authorized to modify this warranty in any way whatsoever. Limits of Liability: IN NO EVENT, REGARDLESS OF CAUSE, SHALL SYMCOM BE LIABLE FOR (1) PENALTIES OR PENALTY CAUSES OF ANY DESCRIPTION OR (2) FOR CERTIFICATION NOT OTHERWISE SPECIFICALLY PROVIDED HEREIN AND/OR INDEMNIFICATION OF BUYER TO OTHERS FOR COSTS, DAMAGES OR EXPENSES, EACH ARISING OUT OF OR RELATED TO THE PRODUCT OR SERVICES OF ANY ORDER OR (3) FOR ANY DAMAGES, WHETHER GENERAL, SPECIAL, OR FOR NEGLIGENCE, AND EXPRESSLY EXCLUDES DAMAGES RESULTING FROM LOSS OF PROFITS, USE OF PRODUCTS, ANY INCIDENTAL, OR INDIRECT CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SYMCOM'S OBLIGATION TO REPAIR, REPLACE OR CREDIT THE PURCHASE PRICE SHALL BE THE LIMIT OF ITS LIABILITY UNDER THIS WARRANTY. Returns: All returns must be authorized by SymCom and must have a Return Material Authorization (RMA) number. Issuance of a RMA number does not acknowledge goods as defective or under warranty by the seller. Unauthorized returns will be refused. Authorized returns must be shipped freight prepaid and are subject to inspection and/or testing prior to disposition. Product built to Buyer's specifications cannot be returned for credit or exchanged under any circumstances. For SymCom’s complete RMA terms, please visit our website. Cancellation of Custom or Non-Preferred Products: Buyer may cancel an order upon written notice to SymCom's customer service department and upon payment of cancellation charges, which shall include all costs, both direct and indirect, incurred and/or committed. SymCom agrees to divert completed work and work in progress from a cancelled order to other orders whenever possible. Cancellation of Preferred Products: Full refund if returned within 30 days of purchase. Unit must be in original packaging and in new condition. An RMA must be issued for any return.

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