Macromatic TD-8 Series Time Delay Relay Competitive Comparison

Industrial control • Plug-in timing relays

Macromatic TD-8 Series Time Delay Relay Comparison

Compare Macromatic TD-8 digital-set time delay relays with SSAC, Diversified and Infitec alternatives. Review timing functions, DIP-switch programming and electrical ratings to narrow your selection for an industrial control panel.

Digital time settingAdd DIP-switch values to set the delay.
6 timing range optionsSeconds, minutes or hours, depending on model.
10 A relay outputChoose the required SPDT or DPDT version.

Compare timing relay features

TD-8 single-function models combine digital time setting with a choice of timing behaviors. The ranges below are separate model options, so select the function and range that match your application.

Comparison scope: Specifications and approvals vary by part number. Confirm the current datasheet, wiring and socket requirements before selecting a replacement.
01 · Time delay programming Macromatic TD-8One 10-position DIP switch; two for dual-time functions. Add the selected switch values to set the delay. SSACOne 10-position DIP switch; two for dual-time functions. Add the selected switch values to set the delay. DiversifiedOne 10-position DIP switch; two for dual-time functions. Add the selected switch values to set the delay. Infitec B SeriesOne 10-position DIP switch. Dual-time versions use five switches for ON time and five for OFF time, set independently. Add the selected values.
02 · Single-function versions available Macromatic TD-8
  • On delay
  • Off delay
  • Interval ON †
  • Single shot †
  • Watchdog †
  • Flasher: OFF first
  • Flasher: ON first
  • Repeat cycle: OFF first ‡
  • Repeat cycle: ON first ‡
  • Delayed interval
  • Triggered on delay †
  • On delay/off delay ‡
  • Triggered delayed interval † ‡
 SSAC
  • On delay (TDM)
  • Interval (TDI)
  • Off delay (TDB)
  • Single shot (TDS)
  • Repeat cycle: ON first & OFF first (TDR) ‡
  • Triggered on delay/off delay (TDMB) ‡
 Diversified
  • On delay (TBC)
  • Interval ON (TBB)
  • Off delay (TBD)
  • Single shot (TBE)
  • Flasher: OFF first (TBL)
  • Repeat cycle: OFF first (TBF) ‡
  • Repeat cycle: ON first (TBG) ‡
 Infitec B Series
  • On delay (BMR)
  • Interval ON (BIR)
  • Off delay (BBR)
  • Single shot (BSR)
  • Watchdog (BOR)
  • Trailing-edge triggered (BTR)
  • Toggle/single shot (BFR)
  • Flasher: ON first & OFF first (BRSR)
  • Repeat cycle: OFF first (BRR) §
  • Repeat cycle: ON first (BRR) §
03 · Time range options Macromatic TD-8
  • 0.1–102.3 seconds
  • 1–1,023 seconds
  • 10–10,230 seconds
  • 1–1,023 minutes
  • 10–10,230 minutes
  • 1–1,023 hours
 SSAC
  • 0.1–102.3 seconds
  • 1–1,023 seconds
  • 10–10,230 seconds
 Diversified
  • 0.1–102.3 seconds
  • 1–1,023 seconds
  • 10–10,230 seconds
  • 0.1–102.3 minutes
  • 1–1,023 minutes
 Infitec B Series
  • 0.1–102.3 seconds
  • 1–1,023 seconds
  • 10–10,230 seconds
BRR only
  • 0.2–6.2 seconds
  • 1–31 seconds
  • 2–62 seconds
  • 0.2–6.2 minutes
  • 1–31 minutes
  • 2–62 minutes
04 · Input voltage options Macromatic TD-812 V DC; 24 V AC/DC; 120 V AC/DC; 240 V AC
−15% / +10% of nominal.
50/60 Hz for AC input. 		SSAC12 V DC; 24 V AC; 24 V DC; 110 V DC; 120 V AC; 230 V AC
12 & 24 V: −15% / +20%.
120 & 230 V: −20% / +10%.
50–60 Hz for AC input. 		Diversified12 V DC; 24 V AC/DC; 48 V AC/DC; 120 V AC/DC; 230 V AC
Listed tolerance: +10%.
50–60 Hz for AC input. 		Infitec B Series12 V DC; 24 V AC; 24/28 V DC; 110 V DC; 120 V AC; 230 V AC
Listed tolerance: +20%.
50–60 Hz for AC input.
05 · Relay output & load ratings Macromatic TD-8SPDT or DPDT
10 A at 240 V AC / 30 V DC
½ HP at 120/240 V AC
⅓ HP at 120 V AC
B300 & R300; AC-15 & DC-13 		SSACDPDT
10 A at 240 V AC / 28 V DC
⅓ HP at 120/240 V AC 		DiversifiedDPDT
10 A at 250 V AC / 24 V DC 		Infitec B SeriesSPDT or DPDT
10 A at 240 V AC / 30 V DC
06 · Socket & mounting Macromatic TD-88- and 11-pin octal plug-in SSAC8- and 11-pin octal plug-in Diversified8- and 11-pin octal plug-in Infitec B Series8- and 11-pin octal plug-in; 11-pin blade plug-in
07 · LED indication Macromatic TD-8One LED: relay status SSACOne LED: ON during timing; relay OFF DiversifiedOne LED: relay energized Infitec B SeriesOne LED: timing indication
08 · Reset time Macromatic TD-80.04 seconds (40 ms) for control-switch-triggered functions.
0.1 seconds (100 ms) for all other functions. 		SSACLess than 50 ms Diversified100 ms before timeout;
50 ms after timeout 		Infitec B Series50 ms
09 · Housing dimensions · W × D × H Macromatic TD-81.8 × 2.4 × 3.0 inches SSAC1.8 × 2.4 × 3.2 inches Diversified1.75 × 2.38 × 3.3 inches Infitec B Series1.75 × 2.375 × 3.125 inches
10 · Agency approvals Macromatic TD-8UL & cUL Recognized; CSA; CE.
UL Listed with the appropriate Macromatic socket. 		SSACUL Recognized; CSA; CE.
UL Listed with an 8-pin SSAC socket. 		DiversifiedUL & cUL Recognized; CSA. Infitec B SeriesUL & cUL Recognized.

† TD-8 trigger option: Functions marked † offer a 5–6 trigger control switch configuration. Match the wiring diagram for the exact model.

‡ Dual-time functions: Marked models use two time settings.

§ Infitec BRR: Five DIP switches set ON time and five set OFF time independently.

Contact ratings depend on load type and contact arrangement. Allow additional panel space for the socket and wiring.

How to choose a TD-8 time delay relay

1. Match the timing sequence

Choose the required behavior first. An on-delay function delays the output after initiation; repeat-cycle functions alternate ON and OFF periods. Confirm whether the sequence must begin ON or OFF.

2. Select the range and input

Choose a timing range that includes your required delay, then match the relay’s input voltage to the control circuit. AC and DC input options are model dependent.

3. Check the output and socket

Match SPDT or DPDT contacts, the applicable load rating and the 8- or 11-pin wiring diagram. A matching pin count alone does not establish replacement compatibility.

DIP-switch timing example

On a single-function TD-8 with 1-second increments, a 28-second delay is set by switching ON the values 4, 8 and 16. Leave the other values OFF. Use the increments printed on the relay; other time ranges use different units or increments.

4 s+8 s+16 s=28 seconds

TD-8 relay selection questions

Does every TD-8 include every timing function?

No. The single-function models have a specific timing behavior.

Can a TD-8 replace an SSAC, Diversified or Infitec relay?

A TD-8 may be a candidate when the timing function, trigger behavior, voltage and output ratings match. Compare terminal assignments and reset requirements before choosing a replacement; there may be variations to the specifications.

What does “UL Listed with socket” mean?

The listing depends on using the relay with the appropriate socket. Confirm the approved socket for the exact TD-8 model. Don't assume that any socket with the same pin count qualifies.

Find the right Macromatic TD-8 relay

Search TD-8 models or email your existing part number, input voltage and required timing function for selection assistance.