Shenzhen Hengyo Power Technology Co., Limited
| Payment Terms | T/T,Western Union |
| Supply Ability | 500pcs/month |
| Delivery Time | In stock |
| Packaging Details | original package |
| Condition | original brand new |
| Warranty | one year |
| Application | oil gas chemical industry |
| Shipping way | DHL FedEx |
| Brand Name | Eaton |
| Model Number | MTL7755ac |
| Place of Origin | India |
| Certification | FM ROSH |
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Product Specification
| Payment Terms | T/T,Western Union | Supply Ability | 500pcs/month |
| Delivery Time | In stock | Packaging Details | original package |
| Condition | original brand new | Warranty | one year |
| Application | oil gas chemical industry | Shipping way | DHL FedEx |
| Brand Name | Eaton | Model Number | MTL7755ac |
| Place of Origin | India | Certification | FM ROSH |
| High Light | Eaton MTL7700 Zener Barrier ，MTL7755AC intrinsic safety barrier ，Crouse-Hinds series Zener Barrier | ||
The MTL7755AC is a high-performance 2-channel shunt-diode safety barrier (Zener barrier) from Eaton's Crouse-Hinds series MTL7700 range, specifically engineered for 2-wire and 3-wire floating bridge RTD applications requiring intrinsic safety protection in hazardous areas.
This passive device limits the voltage and current that can reach a hazardous area under fault conditions, preventing ignition of flammable atmospheres. With a safety description of 3V, 10 Ω, 300mA, the MTL7755AC is the ideal solution for protecting Pt100, Pt500, and Pt1000 RTD sensors in Zone 0, 1, and 2 hazardous locations (gas groups IIC, IIB, IIA).
| Code Segment | Meaning |
|---|---|
| MTL | MTL Instruments Group (now Eaton) |
| 77 | MTL7700 series — Shunt-diode safety barriers |
| 55 | Specific barrier configuration for floating RTD applications |
| AC | Non-polarized, AC/DC compatible configuration |
The "AC" suffix indicates a non-polarized barrier suitable for both AC and DC circuits, distinguishing it from polarity-sensitive models. This model is specifically designed for 2-wire and 3-wire RTDs (floating bridge).
| Parameter | Value |
|---|---|
| Manufacturer | Eaton (Crouse-Hinds series MTL) |
| Series | MTL7700 Range |
| Product Model | MTL7755AC |
| Product Type | Zener Barrier (Shunt-Diode Safety Barrier) |
| Number of Channels | 2 (dual-channel) |
| Polarity | AC (non-polarized) |
| Parameter | Value |
|---|---|
| Safety Description | 3 V, 10 Ω, 300 mA |
| Rated Supply Voltage DC | 3 V DC |
| End-to-End Resistance | 10 Ω |
| Maximum Current | 300 mA |
| Fuse Rating | 250 mA |
| Maximum Safe Area Voltage | 250 V AC/DC |
| Typical Application | 2- or 3-wire RTD (floating bridge) |
| Parameter | Value |
|---|---|
| Gas Groups | IIC, IIB, IIA |
| Zones | Zone 0, 1, 2 |
| NEC Hazardous Rating | Class I, Division 2; Class I, Zone 2 |
| ATEX/IECEx Rating | II (1) GD [Ex ia] IIC |
| ATEX Certificate | BAS01 ATEX 7217 |
| Ingress Protection | IP20 |
| Parameter | Value |
|---|---|
| Width | 12 mm - 12.6 mm |
| Height | 87 mm - 90 mm |
| Depth/Length | 105 mm - 106 mm |
| Weight | 0.106 kg - 0.200 kg |
| Enclosure Material | Polycarbonate |
| Mounting | 35 mm T-section DIN rail (EN 60715) |
| Terminals | Removable screw terminals, colour-coded |
| Parameter | Value |
|---|---|
| Minimum Operating Temperature | -20°C |
| Maximum Operating Temperature | +60°C to +65°C |
| Degree of Protection | IP20 |
| Certification | Status | Certificate Number | Region |
|---|---|---|---|
| CCC Ex (China) | Current (to 2030-09-01) | 2020322316002401 | China |
| ATEX | Certified | BAS01 ATEX 7217 | Europe |
| IECEx | Certified | -- | International |
| UL | Certified | -- | USA |
| CSA | Certified | -- | North America |
| TIIS (Japan) | Expired (2024-07-02) | TC16450 | Japan |
TIIS certification expired July 2, 2024. CCC Ex certification is valid until September 1, 2030.
The MTL7755AC is a passive shunt-diode safety barrier that operates on the Zener barrier principle. It limits both voltage and current that can be delivered to a hazardous area circuit under fault conditions.
The MTL7755AC is specifically designed for floating RTD temperature measurement protection in hazardous area installations:
| Industry | Application |
|---|---|
| Oil & Gas | 2-wire and 3-wire Pt100 temperature measurement on offshore platforms and refineries |
| Chemical Processing | Reactor temperature monitoring with floating bridge RTDs in explosive atmospheres |
| Pharmaceutical | Sterile processing temperature measurement requiring Ex ia IIC certification |
| Power Generation | Turbine bearing temperature monitoring with 2- or 3-wire RTDs |
| Industrial Automation | Process temperature measurement in hazardous locations |
| Analyzer Systems | Used in ABB AK102 analyzer systems for temperature measurement |
| Parameter | Detail |
|---|---|
| Mounting | Standard 35 mm T-section DIN rail (EN 60715) |
| Terminals | Removable screw terminals, colour-coded (blue for hazardous area) |
| Grounding | High-integrity earth connection made simultaneously when clipping onto DIN rail |
| Wire Entry | Angled to assist wiring in limited space enclosures |
| Terminal Capacity | Accommodates conductors up to 2.5 mm² |
| Clearance | Minimal — 12.6 mm width enables high-density installation |
| Operating Position | Any orientation |
| Item | Details |
|---|---|
| Part Number | MTL7755AC |
| Brand | Eaton (Crouse-Hinds series MTL) |
| Product Family | MTL7700 Range — Zener Barriers |
| Tariff Code | 85364900 |
| Weight | 0.106 kg - 0.200 kg |
| Country of Origin | India |
| Condition | New, Original, Factory Sealed |
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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