Global one-stop procurement platform for industrial spare parts.
support01@okmarts.com service@okmarts.com hydraulic@okmarts.com
Okmarts.com Online Store, Refrigeration Compressor Price, O&Kmarts Logo
Max 200 characters
Display the website inEN
EN
translate to EN
EN
translate to ES
ES
translate to العربية
العربية
All
VACON
VACON
  • VFD
    VFD
Inovance
Inovance
  • HMI
    HMI
  • VFD
    VFD
  • Memory Cards & Readers
    Memory Cards & Readers
Fuji
Fuji
  • HMI
    HMI
  • VFD
    VFD
  • Transmitter
    Transmitter
  • Circuit Breaker
    Circuit Breaker
  • PLC
    PLC
  • Contactor
    Contactor
  • Surge Protection Device
    Surge Protection Device
  • Industrial Belt
    Industrial Belt
  • Flowmeter
    Flowmeter
  • Fuse
    Fuse
  • Fan
    Fan
  • Relay
    Relay
  • Power Supply
    Power Supply
  • Battery
    Battery
Panasonic
Panasonic
  • Refrigeration Compressors
    Refrigeration Compressors
  • HMI
    HMI
  • Light Curtain
    Light Curtain
  • VFD
    VFD
  • Sensor
    Sensor
  • Gearbox
    Gearbox
  • Contactor
    Contactor
  • PLC
    PLC
  • Electric Motor
    Electric Motor
  • Flowmeter
    Flowmeter
  • Temperature Controller
    Temperature Controller
  • Relay
    Relay
  • Module
    Module
  • Industrial Heater
    Industrial Heater
  • Expansion Valve Coil
    Expansion Valve Coil
  • Resistor
    Resistor
  • Battery
    Battery
  • IC
    IC
  • Air Conditioner
    Air Conditioner
  • Servo Drive
    Servo Drive
  • Servo Motor
    Servo Motor
Yaskawa
Yaskawa
  • Encoder
    Encoder
  • VFD
    VFD
  • PLC
    PLC
  • Servo Drive
    Servo Drive
INVT
INVT
  • VFD
    VFD
All Brands
All Brands
    • a
    • b
    • c
    • d
    • e
    • f
    • g
    • h
    • i
    • j
    • k
    • l
    • m
    • n
    • o
    • p
    • q
    • r
    • s
    • t
    • u
    • v
    • w
    • x
    • y
    • z
    • 3
    • 7
      Top Picks
      • Keb Frequency Converter VFD 21F4F1R-4UC0
      1/1
      Keb Frequency Converter VFD 21F4F1R-4UC0
      $ 6,171 .88

      ✔ In Stock (Can ship in 5-7 days)

      Quantity
      MOQ : 1
      Payment Methods
      T/T pay VISA pay mastercard pay Diners Club pay Discover pay JCB pay American Express pay Stripe pay PayPal pay Google pay Apple pay Link pay venmo pay
      • Online Support 24/7

      • 12 Months Warranty for New Products

      • 30 Days Money Back Guarantee

      • Specifications
      • Q&A
      • Reviews
      Keb Frequency Converter VFD 21F4F1R-4UC0

      Ask questions

      (0/1,200)

      Max 1200 characters

      • Q: Can I place an order over the phone?

        A: Yes, in some cases, you may be able to place an order over the phone. Please contact our customer service team and provide them with the necessary details to assist you with the phone order process.

      • Q: How can I compare prices and reviews of similar products?

        A: On the product list page, you can view the prices and ratings of different items simultaneously. You can also use filters to sort products by price or rating, facilitating your comparison and selection.

      • Q: Can I place an order for an out-of-stock item?

        A: If an item is currently out of stock, you may not be able to place an order for it. However, you can sign up for a notification to be informed when the item is back in stock.

      View More
      Question has been sent successfully

      Reviews

      • A

        Anonymous user

        Nov 25, 2022

        Keb Frequency Converter VFD 21F4F1R-4UC0
        All was ok! No problems whatsoever.
        Helpful
        Unhelpful

      Keb Frequency Converter VFD 21F4F1R-4UC0

      $ 6,171 .88
      Click here to view shipping costs.

      ✔ In Stock (Can ship in 5-7 days)

      Quantity
      MOQ : 1
      Payment Methods
      T/T pay VISA pay mastercard pay Diners Club pay Discover pay JCB pay American Express pay Stripe pay PayPal pay Google pay Apple pay Link pay venmo pay
      • Online Support 24/7

      • 12 Months Warranty for New Products

      • 30 Days Money Back Guarantee

      People who bought this item also viewed

      New In stock for sale, Keb Frequency Converter VFD 16.F5.C3E-340A

      Keb Frequency Converter VFD 16.F5.C3E-340A

      US$2125.00
      New In stock for sale, Keb Frequency Converter VFD 21F4F1R-4UC0

      Keb Frequency Converter VFD 21F4F1R-4UC0

      US$6171.88
      New In stock for sale, Keb Frequency Converter VFD 16.F4.C0G-4B09

      Keb Frequency Converter VFD 16.F4.C0G-4B09

      US$2636.72
      New In stock for sale, Keb Frequency Converter VFD 15F6K12-3511

      Keb Frequency Converter VFD 15F6K12-3511

      US$21487.11
      New In stock for sale, Emerson Nidec Frequency Converter VFD M702-07200750A

      Emerson Nidec Frequency Converter VFD M702-07200750A

      US$6900.00
      New In stock for sale, Delta Frequency Converter VFD VFD7A5MH23ENSAA

      Delta Frequency Converter VFD VFD7A5MH23ENSAA

      US$458.20
      New In stock for sale, HITACHI Frequency Converter VFD LH1-1320HFC

      HITACHI Frequency Converter VFD LH1-1320HFC

      US$13758.04
      New In stock for sale, Delta Frequency Converter VFD VFD13AME43ANNGA

      Delta Frequency Converter VFD VFD13AME43ANNGA

      US$531.25
      New In stock for sale, DENSO Servo Motor MQM082T2U

      DENSO Servo Motor MQM082T2U

      US$870.46
      New In stock for sale, Allen Bradley Servo Drive 2093-AC05-MP2

      Allen Bradley Servo Drive 2093-AC05-MP2

      US$2047.00
      New In stock for sale, Siemens Power Supply 6EP1931-2FC21

      Siemens Power Supply 6EP1931-2FC21

      US$1305.00
      New In stock for sale, GUOMAO Reduction Drive Gearbox Speed Reducer XLEY64-493-1.1

      GUOMAO Reduction Drive Gearbox Speed Reducer XLEY64-493-1.1

      US$917.88
      New In stock for sale, Siemens PLC 6ES7132-0BL01-0XB0

      Siemens PLC 6ES7132-0BL01-0XB0

      US$2307.69
      New In stock for sale, JSCC Speed Reducer 90GK750RC

      JSCC Speed Reducer 90GK750RC

      US$383.65
      New In stock for sale, Kingston Micro SD Card MLPMR2/256GB

      Kingston Micro SD Card MLPMR2/256GB

      US$538.08
      New In stock for sale, Beckhoff Module ES1114

      Beckhoff Module ES1114

      US$561.54
      New In stock for sale, SONGCHUAN Relay 882N-1AH-S-24VDC

      SONGCHUAN Relay 882N-1AH-S-24VDC

      US$3.46
      New In stock for sale, GS Battery LN3-DIN65

      GS Battery LN3-DIN65

      US$4025.00

      Customers frequently viewed

      New In stock for sale, IWAYA DENKI Water Pump 25CJT0752

      IWAYA DENKI Water Pump 25CJT0752

      US$2307.69
      New In stock for sale, Panasonic Servo Motor MHMF022L1V2M

      Panasonic Servo Motor MHMF022L1V2M

      US$653.85
      New In stock for sale, Honeywell Solenoid Valve VE4025B1045

      Honeywell Solenoid Valve VE4025B1045

      US$334.62
      New In stock for sale, ROTEN Mechanical Seal 8E5K-22-X

      ROTEN Mechanical Seal 8E5K-22-X

      US$384.62
      New In stock for sale, SANDSUN Overload Pump VA08H-760

      SANDSUN Overload Pump VA08H-760

      US$1568.40
      New In stock for sale, GS Battery 6-QW-60(450)-(55D23L-KR)

      GS Battery 6-QW-60(450)-(55D23L-KR)

      US$646.15
      New In stock for sale, Rechi Compressor 44R273A

      Rechi Compressor 44R273A

      US$341.00
      New In stock for sale, Bosch Rexroth Linear Guideway Runner Block R165381920

      Bosch Rexroth Linear Guideway Runner Block R165381920

      US$107.69
      New In stock for sale, MINDMAN Air Cylinder MCQV2-11-40-200

      MINDMAN Air Cylinder MCQV2-11-40-200

      US$88.46
      New In stock for sale, Mitsubishi Compressor YB645WTG

      Mitsubishi Compressor YB645WTG

      US$549.00
      New In stock for sale, TSUBAKI Industrial Chain RS60-HS-1-RP

      TSUBAKI Industrial Chain RS60-HS-1-RP

      Contact Us
      New In stock for sale, YUKEN Overflow Valve BST-03-3C3-D48-N1-48

      YUKEN Overflow Valve BST-03-3C3-D48-N1-48

      US$184.62
      New In stock for sale, BPJ Bearing 6200CE/P4

      BPJ Bearing 6200CE/P4

      US$13.84
      New In stock for sale, WIDE PLUS Transmitter WIDEPLUS-LT7EB01A12DM4D5

      WIDE PLUS Transmitter WIDEPLUS-LT7EB01A12DM4D5

      Contact Us
      New In stock for sale, NORGREN Air Cylinder RM/55451/M/30

      NORGREN Air Cylinder RM/55451/M/30

      US$489.00
      New In stock for sale, TECO Servo Motor TST06751H1NA3201

      TECO Servo Motor TST06751H1NA3201

      Contact Us
      New In stock for sale, Copeland Compressor ZH50KCE-TEZ-512

      Copeland Compressor ZH50KCE-TEZ-512

      Contact Us
      New In stock for sale, Baumer Encoder BFF 1G.05N1024-L2-9

      Baumer Encoder BFF 1G.05N1024-L2-9

      Contact Us
      New In stock for sale, SILICON IC Integrated Circuit LTC6995CS6-2#TRMPBF

      SILICON IC Integrated Circuit LTC6995CS6-2#TRMPBF

      US$13.85
      New In stock for sale, Yaskawa Servo Motor SGMJV-04A3A6S

      Yaskawa Servo Motor SGMJV-04A3A6S

      Contact Us

      Recent related posts

      How to save the maintenance cost of air compressor

      08/30/2020

      How to save the maintenance cost of air compressor

      1.Introduction The okmarts.com power plant has 8 screw air compressors, which are responsible for the supply of instrument air, dust removal air, power air, and gas for second desulfurization and nitrogen production for coal preparation,

      What are the causes of air conditioning trip

      06/20/2020

      What are the causes of air conditioning trip

      What are the causes of air conditioning trip 1. The contradiction between the rated current of the air conditioner and the current carrying capacity of the wire.   Here are two formulas involved:   ①The rated current of air conditioner I=P÷U ÷power factor, the power remains unchanged, the smaller the voltage, the greater the current required.   ② The current carrying capacity of the wire I=U÷R, the voltage is proportional to the current.    So when the power supply voltage is normal, we must consider the line voltage drop. The longer the line, the greater the resistance, the greater the voltage drop, and the smaller the output current at the end. However, because the power of the load remains unchanged, the voltage becomes smaller, and the current that needs to be output will be larger. At this time, the wire is forced to overload, and the time will cause heating, and eventually cause the tripping of the open circuit.    Some friends said that the heat of the wire will not cause the tripping of the circuit breaker. In fact, the manufacturer of the air switch has made it clear in the relevant manuals that the heat of the wire will cause the air switch to trip. Because the wire heats up, the crimp terminal will also heat up, and the resistance will become larger and larger. The larger the resistance, the greater the current consumption, and the hotter it will be, a vicious cycle.    2. Leakage   During the daily maintenance work, we will encounter the situation that the air circuit trips due to the leakage of electricity. At least I have not experienced it once or twice. Regardless of the leakage of the neutral line or the leakage of the live line, a long time will cause the circuit breaker to trip.   Why does the electric leakage cause the MCB to trip? There are two situations.    ① Good grounding. At the beginning, the leakage current was not large, and as time went by, the leakage current became larger and larger, and eventually evolved into a short circuit to ground, unable to close.   ②There is no ground wire. If the equipment is not connected to the protective ground, when the wire leaks to the equipment, it is equivalent to adding a large shunt resistance. Like this problem, if the air conditioner does not have a ground wire, when the wire leaks to the air conditioner, the air conditioner is a very large shunt resistor and will consume a lot of current. Eventually, the wire will heat up or trip open.   How to determine whether the trip caused by the above two aspects can be done with a clamp ammeter.    ① Measure the voltage at the input and output to see if there is a significant change in voltage drop.   ②Measure whether the output current exceeds the standard.    So my suggestion is: first measure the supply voltage to see if it is within the allowable fluctuation range. Then measure the current to see if it exceeds the rated ampacity of the wire. Finally, check the data one by one according to the measured data to find out the reason.

      Debugging method of central air conditioning system

      08/20/2020

      Debugging method of central air conditioning system

      Before the central air conditioner is put into use, the entire system must be debugged. The commissioning of the central air-conditioning system can be divided into: cold water system, cooling system, terminal equipment and air-conditioning host.

      What Are the Commonly Used Refrigerants in Refrigerators and Cold Storage?

      09/02/2024

      What Are the Commonly Used Refrigerants in Refrigerators and Cold Storage?

      There are more than 80 kinds of substances that can be used as refrigerants. Do you know which are the commonly used refrigerants for refrigerators / freezers and cold storage, and what are the selection principles?

      High-Performance Drive Solutions: Innovation and Development of Servo Motors in Robotics

      03/28/2024

      High-Performance Drive Solutions: Innovation and Development of Servo Motors in Robotics

      In recent years, robotic technology has been widely used in industrial production, service industries, medical care and other fields. The motion control of robots is the key to achieving various complex tasks.

      What are the differences between non-standard refrigerators and standard refrigerators

      08/09/2020

      What are the differences between non-standard refrigerators and standard refrigerators

      Non-standard refrigerator means that it is different from standard refrigerator. Let’s take a box-sealed refrigerator as an example. It is mainly composed of a compressor, an evaporator, a condenser,

      Mitsubishi vs Daikin: Top Series Comparison of Mitsubishi Power Multi and Daikin VRV Central Air Conditioners for Home Use

      03/21/2025

      Mitsubishi vs Daikin: Top Series Comparison of Mitsubishi Power Multi and Daikin VRV Central Air Conditioners for Home Use

      Now, in the world to promote environmental protection and low-carbon general trend of green living, inverter air conditioning has entered a new era.

      Analysis of 4 major reasons for the high energy consumption of building HVAC systems

      08/17/2020

      Analysis of 4 major reasons for the high energy consumption of building HVAC systems

      1. Analysis of the high energy consumption of the building HVAC system    The reasons for the high energy consumption of building HVAC systems are mainly reflected in the following aspects:

      Take a look at the compressor market research done by others! Have you found the gap

      09/04/2020

      Take a look at the compressor market research done by others! Have you found the gap

      This is a summary of the market plan for the Xinjiang market. From this we can see that only by understanding the market and users can we make a good sale! Hope to have some inspiration for everyone to develop the market!

      The difference between the three types of evaporators dry, flooded, and falling film evaporators

      08/05/2020

      The difference between the three types of evaporators dry, flooded, and falling film evaporators

      The refrigerant in the dry evaporator passes through the heat exchange tube, and the cold water runs outside the high-efficiency heat exchange tube. Such a heat exchanger has relatively low heat exchange efficiency,

      • Welcome to O&Kmarts

        Is there anything we can help?

        Email us
      • Feedback

      Join in

      Join in to enjoy exclusive discounts and give you greater discounts

      See More About O&Kmarts Member
      Sign up now

      Common Problem

      Payment Methods
      Shipping Guide
      Sales and Refund Policy
      FAQs

      About O&Kmarts

      About Us
      Membership

      Website Terms

      Privacy Policy
      Terms Of Use
      Bidding Agreement
      Review Rules

      Customer Service

      support01@okmarts.com
      service@okmarts.com
      hydraulic@okmarts.com
      +86-28-84166335
      GMT+08:00 Mon-Fri, 9:00 AM-7:00 PM
      Customer Feedback

      POPULAR PRODUCTS :

      Panasonic VFD Danfoss VFD Lenze VFD Fuji VFD Inovance VFD VACON VFD Holip VFD Yaskawa VFD TAIAN VFD Allen Bradley VFD GD10-0R7G-4-B FRN005G11S-4UH NXL00315C2H1SSS00AA NXL00035C1N1SSS00 VFD550B43A 25CJT0752 MHMF022L1V2M VE4025B1045 8E5K-22-X VA08H-760 9GV0824P4K031 aez4430y Atos DHZO-ATE-073-P3/B/DP27SC 20 BFB0712HF Copeland CS16K6E-PFV-255 Daikin 2YC32UXD Danfoss SH295A4ACE dp209wr Ebmpapst W2D160-EA22-17 fuji magnetic contactor sc n1 GMCC PA270X3CS-3MUU GMCC PA280G2CS-4MTL HNB78FA-YE JH517YEB jiaxipera TT1117GY NH47YDA Panasonic QA77K18CAW5 (CSIR) Parker Sporlan OZE-25-CP180 9X13X2ODF 5’ 168993 Rexroth DRC5-52/100Y S0173 ROYAL T755DW-A27

      Disclaimer: All brand names, model or type numbers or marks listed on the website are owned by their respective manufacturers. These terms are used for identification purposes only and are not intended to indicate affiliation with OEM companies. Product pictures shown on the website are for illustrative purposes only and the actual item may vary in design, specification, etc. Confirm at the time of purchase if you are unsure.

      © eCommerce. 2017-2025. All Rights Reserved
      © eCommerce. 2017-2025. All Rights Reserved
      Press and drag the mouse to start taking a screenshot