Eaton MTL SD32X Surge Protector (SD Series): 100% Genuine Global Supply for High-Density Process Loop Surge Protection

Eaton MTL SD32X Surge Protector (SD Series): 100% Genuine Global Supply for High-Density Process Loop Surge Protection

 

Eaton MTL SD32X is an ultra-slim, high-performance surge protection device (SPD) engineered to safeguard sensitive process instrumentation, 4–20 mA current loops, and PLC/DCS analog I/O channels against lightning strikes and electrical transients. Featuring a space-saving 7 mm footprint, the SD32X delivers multi-stage hybrid surge protection with a 32 V DC nominal operating voltage rating, ensuring uninterrupted signal transmission across harsh industrial processing environments.

As a trusted global supplier of Eaton MTL process safety hardware, we guarantee that every Eaton MTL SD32X unit we export is 100% original, brand new, and factory-sealed, offering absolute quality assurance alongside highly competitive international B2B wholesale pricing.

• Range of ATEX Certified intrinsically
safe surge protectors
• Ultra-slim space-saving design;
easy installation
• Multistage hybrid protection circuitry – 20kA
maximum surge current
• Range of voltage ratings – to suit all
process I/O applications
• High bandwidth, low resistance, RTD, PSTN
and 3-wire transmitter versions available
• 10 year product warranty

 

Key Features & Product Highlights

• Ultra-Slim 7 mm Design: Maximizes marshaling cabinet packing density, allowing up to 140 surge protection channels per meter of DIN rail.

• Multi-Stage Hybrid Protection: Combines high-capacity Gas Discharge Tubes (GDT) and fast-acting Silicon Avalanche Diodes (SAD) to provide rapid voltage clamping and high impulse current dissipation.

• High Impulse Surge Capacity: Tested to withstand peak surge currents up to 10 kA ($8/20\text{ }\mu\text{s}$ waveform), protecting field transmitters and control system cards from destructive voltage spikes.

• Low Series Resistance: Minimal inline loop resistance ensures zero signal degradation or measurement error on standard 4–20 mA process control loops.

• Intrinsically Safe & Hazardous Area Certified: Approved under ATEX, IECEx, and CSA standards for installation in Zone 1, Zone 2, and Class I, Div 1/2 hazardous locations.

• Integrated DIN-Rail Grounding: Features a heavy-duty metallic earth foot that automatically bonds to the 35 mm DIN rail upon mounting for instantaneous surge current discharge.

Comprehensive Technical Specifications

Parameter Category	Specification Details
Product Model	Eaton MTL SD32X (SD Series Surge Protector)
Part Number	SD32X
Nominal Operating Voltage ($U_n$)	32 V DC / 22 V AC
Maximum Continuous Operating Voltage ($U_c$)	36 V DC / 26 V AC
Maximum Surge Current ($I_{max}$)	10 kA ($8/20\text{ }\mu\text{s}$ impulse per line)
Nominal Load Current ($I_L$)	400 mA
In-Line Series Resistance	$2.2\text{ }\Omega$ per line
Bandwidth / Frequency Response	25 MHz
Width / Housing Dimensions	7.0 mm width x 99 mm height x 102 mm depth
Mounting Type	Standard 35 mm DIN Rail (IEC 60715)
Hazardous Area Approvals	ATEX, IECEx, CSA, FM (Class I, Div 1/2, Groups A-D; Zone 0/1/2)
Operating Temperature	-40 °C to +80 °C (-40 °F to +176 °F)

Primary Industrial Applications

The Eaton MTL SD32X surge protector is installed in marshaling cabinets and field junction boxes across mission-critical facilities worldwide:

1. Oil & Gas Refineries & Tank Farms: Safeguarding remote 4–20 mA HART pressure and level transmitters against direct and indirect lightning strikes.

2. Petrochemical Processing Plants: Protecting PLC/DCS analog input and output cards against switching transients and induced overvoltages.

3. Power Generation & Substation Automation: Isolating delicate instrumentation loops from ground potential rises and electrical switching noise.

4. Water & Wastewater Infrastructure: Providing reliable surge suppression for long-distance outdoor instrument cabling and flowmeter signals.

 

MTL SD Series Comparison Matrix

 

Model Code	Nominal Voltage (Un​)	Max Operating Voltage (Uc​)	Protection & Module Type	Typical Field Application
SD07X	7 V DC	7.7 V DC	Standard Hybrid Surge	5 V logic, RS-485/RS-422, strain gauges, low-voltage data
SD07R	7 V DC	7.7 V DC	Fused / Loop-Disconnect	Low-voltage communication loops requiring field testing isolation
SD16X	16 V DC	18.0 V DC	Standard Hybrid Surge	12 V power/signal circuits, analytical sensors, low-power loops
SD16R	16 V DC	18.0 V DC	Fused / Loop-Disconnect	12 V signal loops requiring fused protection or maintenance isolation
SD32X	32 V DC	36.0 V DC	Standard Hybrid Surge	Standard 24 V DC loops, 4–20 mA HART loops, PLC/DCS I/O
SD32R	32 V DC	36.0 V DC	Fused / Loop-Disconnect	24 V / 4–20 mA process loops needing loop isolation or fuse protection

Global Export Advantages: Absolute Quality & Competitive Pricing

We specialize in exporting direct OEM industrial automation components, surge protection devices, and intrinsically safe barriers to contractors, panel builders, and plant operators globally. Sourcing the Eaton MTL SD32X through our direct supply chain delivers distinct commercial advantages:

• 100% Genuine & Factory Sealed Guarantee: We provide absolute quality assurance. Every Eaton MTL SD32X module is guaranteed to be authentic, brand new, and delivered in its original factory packaging with full serial number traceability and compliance certificates.

• Highly Competitive Global Pricing: Our high-volume direct sourcing allows us to provide exceptionally competitive B2B wholesale pricing, helping optimize your project and panel-building budgets regardless of your location.

• Express Worldwide Shipping: We maintain extensive ready stock to ensure rapid international dispatch via top logistics carriers (DHL, FedEx, UPS, Air Cargo) directly to your plant site or panel shop.

• Dedicated International B2B Support: Our expert technical team provides rapid inquiry turnaround with official formal quotations issued within 1 to 2 hours.