Eaton MTL SD surge protector.
MTL SD Surge Protectors for Data & Signal Lines | Intrinsic Safety SPD
MTL SD Surge Protection Devices
The Crouse-Hinds series MTL SD range is a comprehensive series of surge protection devices that combine unparalleled packing density, exceptional application versatility, proven and reliable hybrid circuitry, simple installation, and optional loop disconnect facilities.
These features make the MTL SD range the ultimate surge protection solution for process equipment, I/O systems, and industrial communication networks.
The exceptionally high packing density is achieved through an ultra-slim module footprint, allowing individual modules to double as feedback terminals. Each module provides full hybrid surge protection for both 2-wire and 3-wire loop applications.
SDX Models
SDX models are available in voltage ratings of 7V, 16V, 32V, and 55V (SD07X, SD16X, SD32X, and SD55X respectively).
These variants are suitable for a wide range of applications including:
Thermocouple and THC circuits
4–20 mA current loops
Emergency shutdown (ESD) systems
Fire and gas detection systems
SD Models
In addition to the features offered by SDX devices, the SD variants incorporate an integrated fuse and disconnect function. This provides both:
Fused protection against fault currents
Convenient isolation of field wiring from protected circuits without additional disconnect terminals
A third terminal is provided on both the field side and the safe side of the protector, allowing cable screens to be safely terminated to earth.
SDR Models
The SDR range is specially designed to meet the requirements of high-speed data and communication links, offering extremely high bandwidth performance.
SDR units are available in multiple voltage variants, enabling protection for a wide range of communication systems, including:
RS232
RS422
RS485
Bus-powered communication systems
These devices are classified as simple apparatus and may therefore be installed in hazardous areas without impacting the certification of the associated circuit.
SD32T3, SDRTD, SDR3 Models
The SD32T3, SDRTD, and SDR3 surge protection devices provide excellent levels of protection across all three conductors, while maintaining an exceptionally compact footprint.
This range represents the most compact 3-wire surge protection solution currently available on the market, making it ideal for installations where space is at a premium.
Installation ease | Reliability | Safety |
Ultra-slim space-saving design | 20kA maximum surge current | ATEX,IECEx Certified, intrinsically safe |
Thông số | Giá trị |
|---|---|
Product Name | Eaton Crouse-Hinds series MTL SD surge protector |
Catalog Number | SD32 |
Product Length / Depth | 99 mm |
Product Height | 101.3 mm |
Product Width | 7 mm |
Product Weight | 70 g |
Certifications and compliances
IEC / ATEX / IECEx
ATEX: Ex ia IIC T4 Ga, Ta = -30°C
EU: Ex nA IIC T4
IECEx: Ex ia IIC T4 Ga
NEC / CEC (North America)
UL Listed: UL 497B
UL: UL 913, 5th Edition
CSA / cUS: EEx ia Class I, Groups A, B, C and D, T4
CSA C22.2 No. 0-M1991
CSA C22.2 No. 157-M1992
CSA C22.2 No. 142-M1987
CSA C22.2 No. 213-M1987
Note: Certifications and approvals vary by catalog number. Refer to the MTL SD range catalog for detailed listings of certifications and approvals by SKU.
Design Features
Range of ATEX-certified intrinsically safe surge protectors
Ultra-slim, space-saving design for easy installation
Multistage hybrid protection circuitry – maximum surge current up to 20 kA
Wide range of voltage ratings to suit all process I/O applications
Versions available for high bandwidth, low resistance, RTD, PSTN and 3-wire transmitter applications
10-year product warranty
Ordering Information
Model | Nominal voltage (Un) | Nominal current (In) | Series resistance | Max. leakage current | Rated voltage (MCOV) | Voltage protection level (Up) | Residual voltage | Bandwidth (frequency) | Special feature |
|---|---|---|---|---|---|---|---|---|---|
SD07 | 7 / 5 | 250 | 4.2 | 500 | 7.7 | <12 | 30 | 25 kHz | Fuse disconnect |
SD16 | 16 / 11 | 250 | 4.2 | 5 | 17 | <25 | 40 | 25 kHz | Fuse disconnect |
SD32 | 32 / 22 | 250 | 4.2 | 5 | 36 | <45 | 60 | 25 kHz | Fuse disconnect |
SD55 | 55 / 38 | 250 | 4.2 | 5 | 62 | <90 | 100 | 25 kHz | Fuse disconnect |
SD07R | 7 / 5 | 400 | 2.7 | 500 | 7.7 | <12 | 30 | 50 MHz | High bandwidth |
SD16R | 16 / 11 | 400 | 4.7 | 5 | 17 | <25 | 40 | 50 MHz | High bandwidth |
SD32R | 32 / 22 | 400 | 10 | 5 | 36 | <45 | 60 | 50 MHz | High bandwidth |
SD55R | 55 / 38 | 400 | 10 | 5 | 62 | <90 | 100 | 50 MHz | High bandwidth |
SD07X | 7 / 5 | 400 | 2.2 | 500 | 7.7 | <12 | 30 | 25 kHz | Low resistance |
SD16X | 16 / 11 | 400 | 2.2 | 5 | 17 | <25 | 40 | 25 kHz | Low resistance |
SD32X | 32 / 22 | 400 | 2.2 | 5 | 36 | <45 | 60 | 25 kHz | Low resistance |
SD55X | 55 / 38 | 400 | 2.2 | 5 | 62 | <90 | 100 | 25 kHz | Low resistance |
SD32T3 | 32 / 22 | 400 | 2.2 | 5 | 36 | <45 | 75 | 720 kHz | 3 Terminal |
SD07R3 | 7 / 5 | 400 | 2.7 | 500 | 7.7 | <12 | 30 | 50 MHz | 3 Terminal |
SD16R3 | 16 / 11 | 400 | 4.7 | 5 | 17 | <25 | 40 | 50 MHz | 3 Terminal |
SD32R3 | 32 / 22 | 400 | 10 | 5 | 36 | <45 | 60 | 50 MHz | 3 Terminal |
SD55R3 | 55 / 38 | 400 | 10 | 5 | 62 | <90 | 100 | 50 MHz | 3 Terminal |
SDRTD | 1 / 0.75 | 10 | 2.7 | 0.3 | 5 | <12 | 38 | 50 MHz | 3-wire RTD |
SDPSTN | 162 / 114 | 550 | 4.7 | 5 | 175 | <200 | 235 | 4 MHz | PSTN |
SD150X | 150 / 120 | 3000 | 0.1 | 50 | 170 | 130 | <400 | — | High current |
SD275X | 320 / 240 | 3000 | 0.1 | 50 | 360 | 275 | <700 | — | High current |
About Eaton MTL Instruments
Eaton is a global power management company and a leading supplier of explosion-proof and hazardous area solutions. Through its Crouse-Hinds / CEAG and MTL Instruments product lines, Eaton provides certified lighting, power distribution, control and intrinsic safety systems for Zone 0, 1, 2, 21 and 22 hazardous environments.
Eaton solutions are widely applied in oil and gas, petrochemical, chemical, pharmaceutical and heavy industrial facilities where safety, reliability and international compliance are essential.
Viet Thang Loi Technology Company Limited is the official authorized distributor in Vietnam for Eaton MTL Instruments and Eaton Crouse-Hinds / CEAG, providing genuine products, technical consulting and after-sales services for explosion-proof and hazardous area projects.
