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Shenzhen Hengyo Power Technology Co., Limited

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  3. MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316
China MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316
China MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316

  1. China MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316
  2. China MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316
  3. China MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316
  4. China MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316

MTL TP-AC420-N Industrial Surge Protector with 20kA Surge Capacity and 316

  1. MOQ： 1
  2. Price： Negotiable
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Payment Terms T/T,Western Union
Supply Ability 500pcs/month
Delivery Time 3 working days
Packaging Details original package
Condition original brand new
Warranty one year
Series Eaton Crouse-Hinds series
Shipping way DHL FedEx express
Application Automation Industries, oil, gas, chemical industries
Certificate CE ISO TUV
Brand Name MTL
Model Number TP-AC420-N
Place of Origin India
Certification CE UL

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T,Western Union Supply Ability 500pcs/month
Delivery Time 3 working days Packaging Details original package
Condition original brand new Warranty one year
Series Eaton Crouse-Hinds series Shipping way DHL FedEx express
Application Automation Industries, oil, gas, chemical industries Certificate CE ISO TUV
Brand Name MTL Model Number TP-AC420-N
Place of Origin India Certification CE UL
High Light Surge Protection Device 20kA ，MTL Surge Protection Device ，MTL Surge Arrestor 20kA
MTL TP-AC420-N Industrial Transmitter Surge Protector
MTL TP-AC420-N AC Power & 4-20mA Surge Protector
Product Overview
The MTL TP-AC420-N is a high-performance surge protection device from Eaton's Crouse-Hinds MTL TP-AC series, specifically designed for AC-powered field-mounted process transmitters with 4-20mA signal loops. This unit provides comprehensive protection for both the AC power line and the 4-20mA signal line, safeguarding sensitive electronic process instrumentation against induced surges and transient overvoltages from field cabling.
The TP-AC420-N offers a level of protection that far exceeds the optional transient protection facilities available from transmitter manufacturers - achieved without any additional wiring modifications or costly additions. The unit is encased in a rugged ANSI 316 stainless steel housing with ½" NPT threads, designed to screw directly into spare conduit entries on process transmitters for easy, retrofittable installation.
Key Technical Specifications
ParameterValue
ModelTP-AC420-N
ManufacturerEaton MTL (Crouse-Hinds series)
Product SeriesTP-AC
Protection TypeAC Power & 4-20mA Signal
Maximum Surge Current (8/20 µs)20kA peak
Leakage Current<10µA at max. working voltage
Housing MaterialANSI 316 Stainless Steel
Thread Type½" NPT
Connection TypeParallel (flying leads)
Loop Resistance Added0Ω (parallel connection)
Operating Temperature-30°C to +70°C
Product Warranty10 years
Features & Benefits
1. Comprehensive AC Power & Signal Protection
The TP-AC420-N protects both the AC power line (120V & 240V) and the 4-20mA signal line simultaneously, eliminating the need for separate protection devices and simplifying installation.
2. Superior Surge Handling Capacity
The TP protection network consists of high-power solid-state electronics combined with a gas-filled discharge tube (GDT) capable of diverting 20kA impulses (8/20 µs waveform). This robust design ensures reliable protection against lightning-induced surges and switching transients.
3. No Resistance Introduced into Loop
The parallel connection design means the TP-AC420-N adds zero resistance to the 4-20mA measurement loop. This is critical for maintaining signal integrity and ensuring accurate process measurements without calibration adjustments.
4. Ultra-Low Leakage Current
With leakage current of less than 10 µA at maximum working voltage, the device introduces negligible burden on the protected circuit, preserving normal operation while providing robust surge protection.
5. Rugged 316 Stainless Steel Construction
The entire unit is encased in ANSI 316 stainless steel, offering excellent corrosion resistance for harsh industrial environments, including offshore platforms, chemical plants, and wastewater treatment facilities.
6. Easy Retrofit Installation
Installation can be easily carried out retrospectively to existing installations. The unit screws into any unused ½" NPT conduit entry on the transmitter case, and flying leads are connected to the terminal block signal, power, and earth terminals. No additional wiring modifications or ground stakes are required.
7. Hazardous Area Approvals
The TP-AC420-N is FM Approved for use in hazardous locations:
ClassificationRating
Explosion-proofClass I, Division 1, Groups A-D
Non-incendiveClass I, Division 2, Groups A-D; Class I, Zone 2, Group IIC
Dust ignition proofClass II, III, Division 1, Groups E-G
Temperature ratingTa: -30°C to +70°C
8. 10-Year Product Warranty
Backed by Eaton MTL's 10-year product warranty, ensuring long-term reliability and peace of mind.
Applications
The MTL TP-AC420-N is specifically designed for protecting AC-powered field-mounted process transmitters in the following applications:
Application AreaDetails
Oil & GasWellhead monitoring, pipeline pressure transmitters
Chemical ProcessingReactor temperature and pressure measurement
RefineriesFlow, level, and pressure instrumentation
Power GenerationBoiler and turbine instrumentation
Water & WastewaterPump station and treatment plant sensors
PharmaceuticalCritical process monitoring
MiningRemote field instrumentation
HVACLarge-scale building automation sensors
Installation Guidelines
Simple 3-Step Installation
  • Mount: Screw the TP-AC420-N into any unused ½" NPT conduit entry on the transmitter housing
  • Connect: Connect the flying leads to the transmitter's terminal block:
    • AC power leads to power terminals
    • Signal leads to 4-20mA loop terminals
    • Earth lead to transmitter casing ground
  • Complete: No additional grounding or calibration required
Important Notes
• The device connects in parallel - no loop resistance added
• Earthing is achieved through the transmitter casing - no separate ground stake needed
• Suitable for retrofit installation on existing transmitters
• No signal attenuation or loop interruption during normal operation
Summary
The MTL TP-AC420-N Surge Protector delivers reliable, high-performance protection for AC-powered field-mounted process transmitters with 4-20mA signal loops. With its 20kA surge capacity, zero loop resistance, rugged 316 stainless steel housing, and hazardous area approvals, the TP-AC420-N is the ideal choice for engineers seeking to protect critical process instrumentation from costly surge damage.
Key Advantages
  • Dual protection - AC power + 4-20mA signal in one device
  • 20kA surge capacity - Handles the most severe transients
  • Zero loop resistance - Parallel connection preserves signal accuracy
  • Ultra-low leakage - <10µA at max. working voltage
  • 316 stainless steel - Excellent corrosion resistance
  • ½" NPT threads - Direct screw-in installation
  • Hazardous area approved - FM certified for Class I, Division 1
  • Easy retrofit - No wiring modifications required
  • 10-year warranty - Long-term reliability assurance
Protect your critical process transmitters with MTL TP-AC420-N - engineered for reliability in harsh and hazardous areas.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Distributor/Wholesaler,Exporter,Seller,Manufacturer,Trading Company

  • Year Established:

    2013

  • Total Annual:

    2000000-5000000

  • Employee Number:

    20~50

  • Ecer Certification：

    Verified Supplier

Shenzhen Hengyo Power Technology Co., Limited is your best partner for industrial automation. We provide ideal design and solution for automated industries with products from different international brands like MTL, PEPPERL+FUCHS, Phoenix Contact, Weidmueller, Honeywell, Max, Tamagawa, Delta, Panaso... Shenzhen Hengyo Power Technology Co., Limited is your best partner for industrial automation. We provide ideal design and solution for automated industries with products from different international brands like MTL, PEPPERL+FUCHS, Phoenix Contact, Weidmueller, Honeywell, Max, Tamagawa, Delta, Panaso...

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Get in touch with us

  • Reach Us
  • Shenzhen Hengyo Power Technology Co., Limited
  • Room 2407, B Block No.145 Chengshi Zhuchang Bld, Bagua 2nd Rd, Futian Dist. Shenzhen City, China 518029
  • https://www.ac-servomotors.com/

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