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National Instruments Corporation A-1 SCXI-1161 User Manual
Appendix
A

Specifications

This appendix lists the specifications for the SCXI-1161. These are
typical at 25° C and 50% humidity unless otherwise stated. The
operating temperature range is 0° to 50° C.

Channel Rating

Maximum switching capacity (resistive load)1
AC ...............................................8 A at 125 VAC
6 A at 250 VAC
DC ...............................................5 A at 30 VDC
Switching current................................8 A maximum per channel
50 A maximum per module
Channel on resistance .........................175 m Ω
Contact material..................................Silver alloy
Life2
Mechanical (at 180 cpm)..............107 operations minimum
Electrical (at 20 cpm)...................105 at rated load
Isolation
Terminal to terminal and
terminal to earth...........................250 Vrms3
Maximum speed..................................20 cpm at maximum load
180 cpm at no load
1 If you operate the module at high currents, later operation at low currents may not be possible.
2 Relays are subject to normal wear based on the number of operations.
3 Module tested following the UL 3111 and IEC 1010 standard for voltage installation category II for reinforced
or double insulation.