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Littelfuse 350-200 Three-Phase Voltage/Phase Monitor

Price: $197.47
Quantity:
+ -
Usually ships within 1 week
SKU: MSR350-200


Shipping Weight:
3.0 LBS
Shipping Dimensions
Length: 6 In
Width: 6 In
Height: 10 In
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Littelfuse 350-200 Voltage/Phase Monitor Product Description

The 350 is a heavy-duty voltage monitor. This product should be used when high current relays or dual contacts are required, or 480V controls are used. Since the 350 uses heavy-duty relays, it comes in fixed voltage range models rather than a dual autoranging version like the Model 250.

The 350-200 has a 15A general purpose contact. The 350-400 provides a SPDT (Form C) relay rated to switch up to 600V, allowing the use of 480V controls, eliminating the need for a control power transformer to step the voltage down to 120-240V. 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.

Littelfuse 350-200 Voltage/Phase Monitor Typical Applications

  • Fans
  • Compressors
  • HVAC
  • Heat Pumps
  • Well Pumps
  • Sump Pumps
  • Small Conveyor Motors
  • Oil Rigs

Littelfuse 350-200 Voltage/Phase Monitor Features

  • 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 Use 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
  • 600V Rated Relay Contacts Available on Some Models: Eliminates the Need for a Control Transformer to Step Voltage Down to 120-240V for Control Circuit

Littelfuse 350-200 Voltage/Phase Monitor Specifications

3-Phase Line Voltage . . . . . . . . . . . . 190 to 240 VAC

Frequency . . . . . . . . . . . . . . . . . . . . . 50*/60Hz

Low Voltage (% of setpoint)

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

Voltage Unbalance (NEMA)

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

Trip Delay Time

  • Low Voltage . . . . . . . . . . . . . . . . 4 seconds
  • Unbalance & Phasing Faults . . . . . . . 2 seconds

Restart Delay Time

  • After a Fault . . . . . . . . . . . . . . . . . 2 seconds
  • After a Complete Power Loss. . . . . . . 2 seconds

Output Contact Rating

  • SPDT (350200) . . . . . . . . . . . . . . . . . . . . . . . . 480VA @ 240VAC Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 15A General Purpose
  • SPDT (350-400,350-600) . . . . . . . . . . . . . . . . . 470VA @ 600VAC
  • DPDT(-6 Option) . . . . . . . . . . . . . . . . . 1-10A General Purpose
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 480VA @ 240VAC Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15A General Purpose
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 480VA @ 240VAC Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1hp @ 240VAC
  • DPDT (-8 Option) . . . . . . . . . . . . . . . . . 2-15A General Purpose
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480VA @ 240VAC Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1hp @ 240VAC

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

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

Safety Marks

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

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

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

Special Options

  • Option 2: Variable Restart Delay . . . . . . . . . . . Manual, 2-300 seconds adj.
  • Option 5: DPDT Relay
  • Option 6: 2 Relays (1) 10A, (1) 15A
  • Option 8: 2 Relays (2) 15A
  • Option 9: High Voltage (% of setpoint)
    • Trip . . . . . . . . . . . . . . . . . . . . . . . . 110%
    • Reset. . . . . . . . . . . . . . . . . . . . . . . 107%

*Note: 50Hz 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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