Shenzhen Hengyo Power Technology Co., Limited
| Payment Terms | T/T,Western Union |
| Supply Ability | 500pcs/month |
| Delivery Time | ship out immediately after payment received |
| 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 | SD07R |
| Place of Origin | USA |
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Product Specification
| Payment Terms | T/T,Western Union | Supply Ability | 500pcs/month |
| Delivery Time | ship out immediately after payment received | 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 | SD07R |
| Place of Origin | USA | ||
| High Light | SD07R Surge Protection Device ，Surge Protection Device Eaton | ||
SD07R - Intrinsically Safe Surge Protection for RS-485 & 4-20mA Loops
The SD07R is a high-performance surge protection device designed specifically to protect RS-485, RS-232 communication lines, and 4-20mA process control loops from damaging transient overvoltages and lightning-induced surges. Part of Eaton MTL's trusted SD Series, this module delivers robust protection in an ultra-slim, space-saving package ideal for DIN rail mounting in industrial control cabinets, hazardous areas, and field junction boxes.
| Feature | Benefit |
|---|---|
| Ultra-slim 7mm width | Maximizes panel density - up to 12 modules per foot of DIN rail |
| 10kA maximum surge current (8/20 µs) | Robust protection against lightning and switching transients |
| < 1ns response time | Instantaneous clamping protects sensitive electronics |
| Fused disconnect / loop isolation | Safe maintenance - pull the fuse to isolate the circuit without removing terminals |
| Dual-channel protection | Protects 2-wire and 3-wire loops in one module |
| DIN rail mountable | Tool-free installation, standard 35mm rail |
| ATEX / IECEx certified | Suitable for hazardous area installations (intrinsically safe) |
| Auto-resetting after surge | No downtime - continuous operation maintained |
| 10-year product warranty | Long-term reliability backed by Eaton MTL |
| Parameter | Value |
|---|---|
| Model | SD07R |
| Nominal voltage (Un) | 7V DC |
| Max continuous operating voltage (Uc) | 7V DC |
| Nominal discharge current (In) | 3kA (8/20µs) |
| Max discharge current (Imax) | 10kA (8/20µs) |
| Response time (tA) | ≤1 nanosecond |
| Bandwidth | 50 MHz |
| Load current rating | 400 mA max |
| Protection modes | Line-to-line, line-to-ground |
| Residual voltage (clamping) | Low clamping voltage for sensitive equipment |
| Operating temperature | -40°C to +80°C |
| Dimensions (H x W x D) | 99mm x 7mm x 99mm |
| Weight | ~56g (0.077kg) |
| Mounting | 35mm DIN rail (EN 60715) |
| Certifications | ATEX, IECEx, CSA, UL (varies by region) |
The SD07R features multistage hybrid protection circuitry combining gas discharge tubes (GDT) and solid-state clamping components. This delivers both high surge handling capacity and ultra-fast response - essential for protecting expensive PLC cards, DCS I/O modules, and field transmitters.
Unlike standard SDX series protectors, the SD series (including SD07R) incorporates a built-in fuse holder. This allows technicians to:
The SD07R is BASEEFA/ATEX certified as a simple apparatus, meaning it can be installed in Zone 0, 1, and 2 hazardous areas without compromising the intrinsic safety certification of the loop.
At just 7mm wide, the SD07R occupies minimal panel space - a critical advantage for retrofitting surge protection into existing cabinets where space is at a premium.
| Application | Specific Use Case |
|---|---|
| Fire & Gas Systems | Addressable loops, detector circuits |
| Process Control | 4-20mA analog inputs from pressure/temperature transmitters |
| Emergency Shutdown (ESD) | Safety PLC digital inputs |
| Communication Networks | RS-485, RS-232, Modbus, Fieldbus |
| Telemetry & SCADA | Remote terminal unit (RTU) protection |
| Hazardous Area Barriers | Downstream of zener barriers or galvanic isolators |
| Model | Description |
|---|---|
| SD07R | 7V surge protector with fused disconnect |
| SD16R | 16V version for 4-20mA loops |
| SD32R | 32V version for higher voltage signals |
| SD55R | 55V version |
| SD07X | 7V version without fused disconnect (standard SDX series) |
Cross-reference: Compatible with and replaces legacy MTL SD07R units. Backward compatible with SD series mounting bases.
Company Details
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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