© 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062216
Time Delay Relays
Dedicated - Delay-on-Make
www.littelfuse.com/trm
TRM SERIES
Description
The TRM Series is a combination of analog electronic circuitry
and electromechanical relay output. It provides input to output
isolation with a wide variety of input voltages and time ranges.
Standard plug-in base wiring, fast reset, rugged enclosure, and
good repeat accuracy make the TRM a select choice in any
OEM application.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At the
end of the time delay, the output relay energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Electronic circuitry with
electromechanical relay Repeat Accuracy + / - 2%
Isolated 10A, SPDT or
DPDT output contacts Allows control of loads for AC or DC voltages.
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC8 hold-down clips.
NDS-11 11-pin Socket
11-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC11 hold-down clips.
PSC8 or PSC11 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use PSC8
with NDS-8 Octal Socket or PSC11 with NDS-11
Socket. Sold in sets of two.
L1 N/L2
L1 N/L2
L1 N/L2
8-pin octal DPDT
8-pin octal SPDT
11-pin DPDT
V = Voltage
RT is used when
external adjustment
is ordered. Relay
contacts are isolated.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT OUTPUT TIME TOLERANCE TIME DELAY
TRM120A2X30 120VAC Knob Octal, DPDT +/- 20% 1 - 30s
TRM120A2Y120 120VAC Knob Octal, DPDT +/- 10% 2 - 120s
TRM120A2Y180 120VAC Knob Octal, DPDT +/- 10% 2 - 180s
TRM24A8Y5 24VAC External Octal, SPDT without potentiometer +/- 10% 0.1 - 5s
TRM24D1X10 24VDC/28VDC Fixed Octal, DPDT +/- 20% 10s
TRM24D1X2 24VDC/28VDC Fixed Octal, DPDT +/- 20% 2s
If you don’t find the part you need, call us for a custom product 800-843-8848
*
*8-pin models UL listed when used in
combination with P1011-6 socket only.
8-PIN
11-PIN