Macromatic TR-6 Series Time Delay Relay Competitive Comparison

MULTIFUNCTION PLUG-IN TIMERS

Macromatic TR-6 Series Time Delay Relay Comparison

Compare Macromatic TR-681 and TR-682 relays with SSAC TRU timers for industrial control applications. Macromatic combines rotary-switch setup with 16 timing ranges. The right choice depends on your timing function, control voltage and socket wiring.

8 or 4Timing functions by model
16 ranges0.05 seconds to 100 hours
12–125V DCAlso accepts 24–240V AC

TR-681 & TR-682 vs. SSAC TRU: Feature Comparison

The TR-6812U and TR-6816U provide eight timing functions; the TR-6822U provides four. SSAC TRU3 and TRU2 offer six functions, while TRU1 offers three.

Timing functions: TR-681 vs. TRU2 / TRU3

MACROMATIC TR-6

TR-6812U & TR-6816U: 8 functions
On Delay; Flasher (ON First); Interval On; Single Shot (Falling Edge); Off Delay; Watchdog; Single Shot; On Delay (Triggered).

SSAC TRU

TRU3 & TRU2: 6 functions
On Delay; Single Shot; Interval On; Flasher (ON First); Off Delay; Watchdog.

Timing functions: TR-682 vs. TRU1

MACROMATIC TR-6

TR-6822U: 4 functions
On Delay; Flasher (ON First); Interval On; Flasher (OFF First).

SSAC TRU

TRU1: 3 functions
On Delay; Flasher (ON First); Interval On.

Function selection

MACROMATIC TR-6

8-position rotary switch; available functions depend on model.

SSAC TRU

6-position slide switch; available functions depend on model.

Timing range

MACROMATIC TR-6

0.05 seconds–100 hours
16 selectable ranges.

SSAC TRU

0.1 second–1,000 minutes
6 selectable ranges.

Time-range selection & adjustment

MACROMATIC TR-6

16-position rotary switch
Potentiometer adjusts the delay within the selected range.

SSAC TRU

4 DIP switches
Potentiometer adjusts the delay within the selected range.

Input voltage

MACROMATIC TR-6

24–240V AC
12–125V DC

SSAC TRU

19–264V AC
19–30V DC

Output configuration & socket pins

MACROMATIC TR-6

TR-6812U: 11-pin DPDT
TR-6816U: 8-pin SPDT
TR-6822U: 8-pin DPDT

SSAC TRU

TRU3: 11-pin DPDT
TRU2: 8-pin SPDT
TRU1: 8-pin DPDT

Contact ratings

MACROMATIC TR-6

10A at 240V AC & 30V DC
1/2 hp at 120/240V AC (N.O.)
1/3 hp at 120/240V AC (N.C.)
B300 & R300 (N.O.); AC15 & DC13

SSAC TRU

10A resistive at 120/240V AC & 28V DC
1/3 hp at 120/240V AC

Status LEDs

MACROMATIC TR-6

None.

SSAC TRU

1 input LED and 1 output LED.

Agency approvals

MACROMATIC TR-6

UL & cUL Recognized; UL Listed when used with the appropriate socket; CE.

SSAC TRU

UL Recognized; CSA; CE.

Compare the function diagrams and trigger behavior before selecting a replacement. N.O. = normally open; N.C. = normally closed. SPDT = single-pole, double-throw; DPDT = double-pole, double-throw.

Which Macromatic TR-6 Model Should You Compare?

Start with the output configuration, then check the required timing function. Confirm the terminal assignments before replacing a relay.

Compare with SSAC TRU3

TR-6812U

11-pin DPDT
8 functions

Find TR-6812U →

Compare with SSAC TRU2

TR-6816U

8-pin SPDT
8 functions

Find TR-6816U →

Compare with SSAC TRU1

TR-6822U

8-pin DPDT
4 functions

Find TR-6822U →

Choose by Application Requirement

  • 12V DC control circuit: The Macromatic models include 12V DC within their stated input range. The TRU range starts at 19V DC.
  • Long timing cycle: Macromatic extends to 100 hours; TRU extends to 1,000 minutes, or 16 hours 40 minutes.
  • OFF-first flashing: Compare the TR-6822U when the cycle must begin with the output off.

Before Replacing a Time Delay Relay

Match the supply voltage, function sequence, timing range and trigger wiring. Check the socket pinout, load type and contact rating, then confirm the required relay-and-socket approvals. Matching the pin count alone does not establish interchangeability.

TR-6 Time Delay Relay Questions

What is the difference between TR-681 and TR-682 relays?

TR-6812U and TR-6816U offer eight functions, including triggered On Delay and Single Shot (Falling Edge). TR-6822U offers four functions and includes Flasher (OFF First). The models also differ in socket and output configuration.

How is the time delay set?

Select the timing function, choose one of the 16 timing ranges with the rotary range switch, and adjust the potentiometer to set the delay within that range. Follow the model’s installation instructions when changing settings.

Find Your Macromatic Time Delay Relay

Browse TR-681 and TR-682 relays or contact Major Electronix with your existing part number, control voltage and timing requirements.

Verify the current specifications and socket requirements for the exact part number before ordering.