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Maximum Current:

Maximum AC Switching Voltage:

Maximum DC Switching Voltage:

Maximum AC Switching Power:

Maximum DC Switching Power:

Relay Configuration:

Number of Inputs:

Normally Open (NO):

Normally Closed (NC):

Changeover (CO):

Mounting:

Power Supply:

Safety Ratings and Approvals:

Manual Reset Option?

Replaceable Fuse?

Time Delay?

Visual Indicator?

Operating Temperature:

Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Help with Safety Relays specifications:

Performance
   Maximum Current       This is the maximum continuous current allowable across the relay output terminals under the specified heat dissipation and ambient temperature conditions. Generally, AC current is specified in RMS units. Maximum current is also known as the maximum switching voltage range, or the maximum switching current. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum AC Switching Voltage       This is the maximum AC switching voltage. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum DC Switching Voltage       This is the maximum DC switching voltage. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum AC Switching Power       The maximum AC switching power is measured in volt amperes (VA). 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum DC Switching Power       The maximum DC switching power is measured in watts (W). 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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Relay Configuration
   Relay Configuration       
   Your choices are...         
   Single Channel       Capable of accepting only one NC input. When used in safety circuits they are unable to detect a short circuit failure or a failure of the monitored input to change state. 
   Dual Channel       Ensures safety system integrity even if one logic circuit fails. Capable of accepting two inputs; one to each of its two, redundant self-monitoring safety circuits. Capable of detecting wiring faults or a failure of one of the monitored inputs to change state. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Number of Inputs         
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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Number of Contacts
   Normally Open (NO)       With normally open (NO) devices, the relay contact pair is open when the coil is not energized. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Normally Closed (NC)       With normally closed (NC) devices, the relay contact pair is closed when the coil is not energized. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Changeover (CO)       Changeover relays typically have one set of Form C contacts and are single-pole, double-throw (SPDT) devices. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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General Specifications
   Mounting       
   Your choices are...         
   Bracket (Flange) Mount       The relay is equipped with a flange. Typically, this flange is installed by bolting the unit to a matching flange that is welded to a corresponding wall. 
   DIN Rail       The relay is equipped with a fastener that can attach to a DIN rail. 
   Panel       The relay can be mounted in or on a panel. 
   PC Board       The relay can be mounted on a printed circuit board (PCB). 
   Socket or Plug-in Style       The relay can be mounted in a socket or on a printed circuit board (PCB). 
   Other       Other unlisted mounting styles. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Power Supply
   Power Supply       
   Your choices are...         
   AC Power Supply       The module requires an AC power supply. 
   DC Power Supply       The module requires a DC power supply. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Safety Ratings and Approvals
   Safety Ratings and Approvals       
   Your choices are...         
   Category / Type 1       Loss of function may occur after a single fault. Devices are designed after well-established components and principles. 
   Category / Type 2       Loss of function may occur if a fault appears between two test cycles. 
   Category / Type 3       The safety function is maintained in the case of a single fault. 
   Category / Type 4       The safety function is maintained in case of multiple faults. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Features
   Manual Reset Option?       Devices have a manual-reset option. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Replaceable Fuse?       The device has a replaceable fuse. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Time Delay       Relays provide time delay on make, time delay on break, single shot, recycling, and interval timing functions. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Visual Indicator       The relay has visual indicator such as a light-emitting diode (LED).  
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Environment
   Operating Temperature       This is the full-required range of ambient operating temperature. This represents the surrounding air temperature limits. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
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