MTL intrinsically safe power supplies

Intrinsic safety

Eaton's Crouse-Hinds series range of MTL intrinsically safe (IS) isolated power supplies are ideal for providing power to instrumentation in hazardous process areas. They offer a wide range of different IS output voltages, ranging from 4.8V - 17.7V, offering flexibility of options to best suit a variety of applications.

9491-PS-PLUS models: Safe area / Zone 2 mount power supply that takes standard 24V DC input and produces an intrinsically safe, 12V DC nominal output. Capable of powering the Ethernet modules and other IS devices- with Ex ia output (up to 200mA) for devices mounted in Zone 0, and Ex ib output (up to 400mA) for devices mounted in Zone 1 Gas Group IIB hazardous areas.
9492-PS-PLUS models: Safe area / Zone 2 mount power supply that takes standard 24V DC input and produces an intrinsically safe, 12V DC nominal output. The optimum solution for powering MTL 947x-ET/G Ethernet modules and other IS devices- with Ex ia output (up to 200mA) for devices mounted in Zone 0, and Ex ib output (up to 400mA) for devices mounted in Zone 1 Gas Group IIB hazardous areas.
MTL 9493-PS models: Safe area / Zone 2 mount power supply range that takes standard 24V DC input and produce intrinsically safe, 5.4 to 18V nominal output. With Ex ia output for devices mounted in Zone 0 and Zone 1, Gas Group IIB and IIC hazardous areas.

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Overview Models Resources Support

Safety

Minimises the power dissipation

Reliability

Withstands extremely high temps (0 to +70C)

Ease of Use

DIN-rail or backplane mounting

Certifications and compliances

ATEX & IECEx approved

Zone 0 outputs
Group I, IIA or IIB or IIC, IIIC
Zone 2 mounting
T4 temperature classification
Certified for -40°C to +70°C

FM & FMc approved (US and Canada)

9491-PS only

Class I Div 1 outputs
Class I Zone 0 Group IIB outputs
Class I Zone 1 Group IIB outputs
Class I Division 2 mounting
Class I Zone 2 mounting
T4 temperature classification
Certified for 0°C to +70°C

CE marked for compliance with LVD, EMC, ATEX and RoHS Directives.

Approvals held and approval details vary between models. Please refer to certificates for specific details.

Design Features

Isolated power supply
Zone 2 & Division 2 mountable
DIN-rail mounting
ATEX / IECEx certified
FM / FMC approved
200mA @ 10.9V DC - Ex ia IIB Groups C, D output
400mA @ 11.8V DC - Ex ib IIB output
Power over Ethernet option

Specifications

Ordering information

Part Number	Description	Gas Group	Uo	Nominal output voltage	Nominal output current	Hazardous Area Certifications *
9491-PS-PLUS	IS power supply Ex ia/ib	IIB	12.4V	11.6V … 12.1V +	400mA +	ATEX & IECEx Approved
9492-PS-PLUS	IS power supply Ex ia/ib	IIB	12.8V	11.9V … 12.5V +	550mA +	ATEX & IECEx Approved
9493-PS-C5	IS power supplies Ex ia	IIC	5.4V	4.8V … 5.2V	180mA	ATEX & IECEx Approved
9493-PS-B5	IS power supplies Ex ia	IIB	5.4V	4.8V … 5.2V	250mA	ATEX & IECEx Approved
9493-PS-C6	IS power supplies Ex ia	IIC	7V	5.7V … 6.7V	300mA	ATEX & IECEx Approved
9493-PS-C9	IS power supplies Ex ia	IIC	10V	8.4V … 9.7V	300mA	ATEX & IECEx Approved
9493-PS-C11	IS power supplies Ex ia	IIC	12V	9.9V … 11.7V	300mA	ATEX & IECEx Approved
9493-PS-C12	IS power supplies Ex ia	IIC	13V	10.8V … 12.7V	250mA	ATEX & IECEx Approved
9493-PS-C14	IS power supplies Ex ia	IIC	15V	12.4V … 14.7V	120mA	ATEX & IECEx Approved
9493-PS-B14	IS power supplies Ex ia	IIB	15V	12.4V … 14.7V	250mA	ATEX & IECEx Approved
9493-PS-C17	IS power supplies Ex ia	IIC	18V	15.0V … 17.7V	60mA	ATEX & IECEx Approved
9493-PS-B17	IS power supplies Ex ia	IIB	18V	15.0V … 17.7V	160mA	ATEX & IECEx Approved

* Select Certification Reports under the Resources tab for full list of certifications
+ For Ex ib output. See Brochure For Ex ia output

More variants outside the standard stock range can be ordered, subject to an Minimum Order Quantity. Please contact Eaton for further details.

Download Links

Certification reports

Installation instructions

MTL9492-PS-PLUS 12V DC IS Power Supply Manual

(PDF 3 MB , 11/29/2023)
MTL9493-PS 12V DC IS Power Supply Manual

(PDF 3 MB , 11/29/2023)

Technical data sheets

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Phone

1-281-571-8065

Tech Support Email

mtltechsupport@eaton.com

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