Square D Legacy Series DPDT Ti...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$232.33
Square D Legacy Series DPDT Time Delay Relay, 15A, 12...240V AC

Square D Legacy Series DPDT Time Delay Relay, 15A, 12...240V AC

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Model: 822TD10HUNI

In Stock (leaves warehouse same day if ordered before 3pm ET)

$232.33
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Square D Legacy Series DPDT Time Delay Relay, 15A, 12...240V AC

The Square D Legacy Series DPDT Time Delay Relay delivers 10 selectable timing functions across an ultra-wide range of 100 ms to 10 days, covering nearly every industrial timing requirement. A universal supply voltage of 12...240 V AC/DC (50...60 Hz) paired with DPDT silver-nickel (AgNi) contacts rated 15A make it suitable across a wide range of control circuits. Housed in a slim 17.5 mm modular package for 35 mm DIN rail mounting (IEC 60715), it is ideal for space-constrained panels, and its UL/CE listings with RoHS compliance support reliable, code-compliant performance.

Key Features

  • Time Delay Range: Multifunction timing from 100 ms...1 s up through 1...10 d across 10 selectable ranges, covering nearly any delay requirement.
  • Durable Contacts: DPDT switch configuration with AgNi (silver-nickel) contacts rated 15A, 1/2hp at 1200VAC and 1hp at 240VAC AC-1, with breaking capacity of 4000VA AC-1.
  • Universal Voltage Input: Rated supply voltage of 12...240 V AC/DC, 50...60 Hz, simplifying stocking across control voltages.
  • Slim DIN-Rail Mounting: 17.5 mm slim modular package mounts to 35 mm DIN rail conforming to IEC 60715 for easy installation in tight spaces.
  • Status Indication: Dual LED indicators — green LED for input status, red LED blinking during timing and steady when energized.
  • High Durability: Rated for 30,000 electrical cycles and 15,000,000 mechanical cycles, with repeat accuracy of +/- 0.2%.
  • Environmental Rating: IP20 (terminals, IEC 60529) and IP40 (front panel, IEC 60529), with operating ambient temperature of -20-55 °C.

Certifications & Compliance

  • UL Listed
  • CE Marked
  • Complies with WEEE
  • RoHS Compliant
  • Conforms to IEC 61812-1

Technical Specifications

  • Toxic Heavy Metal Free: Yes
  • Rohs Exemption Information: Yes
  • Mercury Free: Yes
  • China Rohs Regulation: X
  • Reach Free Of Svhc: Yes
  • Voltage Range: 0.85...1.15 Un
  • Eu Rohs Directive: Pro-active compliance (Product out of EU RoHS legal scope)
  • Ambient Air Temperature For Operation: -20-55 °C
  • Ip Degree Of Protection: IP20 IEC 60529 terminals) || IP40 IEC 60529 front panel)
  • Minimum Switching Current: 100 mA 5 V
  • Contacts Material: AgNi

Typical Applications

  • Industrial Control Panels
  • Machine and Process Automation
  • HVAC and Building Control Systems
  • Motor Control and Sequencing Circuits
  • Panelboard and DIN-Rail Enclosure Installations

Why Square D?

Square D backs the Legacy Series with rugged AgNi contacts, high mechanical and electrical durability, and adherence to IEC 61812-1 alongside UL and CE listings, giving panel builders and electricians confidence in dependable, code-compliant timing control for demanding industrial environments.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Time Delay Relay
Voltage Rating:
12-240V AC/DC
Amperage Rating:
15A
Configuration:
DPDT
Series:
Legacy
Standards:
IEC 61812-1
Listing:
UL Listed
Product Material:
AgNi (Silver-Nickel) Contacts
Department:
Electrical
Product Group:
Motor Control & Automation
Product Subgroup:
Contactors & Relays

Square D 822TD10HUNI – Frequently Asked Questions

1) How much space does this DIN rail time delay relay take up in the panel?
It's a 17.5 mm slim modular housing that clips onto 35 mm DIN rail per IEC 60715, so it occupies about one standard module width next to your breakers and terminal blocks. That makes it workable in tight control enclosures where a plug-in socket-mounted timer would not fit.
2) Can one relay do both on-delay and off-delay, or do I need to order a specific function?
One part covers it. The 822TD10HUNI is a multifunction timer with 10 selectable timing functions and 10 selectable ranges, set on the unit itself, so you pick on-delay, off-delay, or the other patterns at commissioning rather than at ordering. Only the single model 822TD10HUNI is offered.
3) Can this timing relay switch a motor directly, or do I need a contactor downstream?
The DPDT contacts are rated 15A with a breaking capacity of 4000 VA AC-1, and carry a horsepower rating of 1 hp at 240 VAC AC-1. Small loads inside that envelope can be switched directly. Anything larger, or anything needing overload protection, belongs on a contactor with the timer driving the coil.
4) Is this relay UL Listed and suitable for a code-compliant industrial control panel?
It is UL Listed and CE marked, conforms to IEC 61812-1 for specified-time relays, and is RoHS compliant with WEEE compliance stated. Protection is IP20 at the terminals and IP40 at the front panel per IEC 60529, so it is an in-enclosure device, not something to mount on an exposed surface.
5) What is the difference between the Square D 822TD10HUNI and the Eaton TRL04 timing relay?
Two practical differences. Contact arrangement: the Square D is DPDT, giving you two independent changeover circuits off one timer, while the Eaton TR Series TRL04 is SPDT. Function count: the Square D offers 10 selectable timing functions, the TRL04 is a 4-function unit covering ON/OFF delay. Both are DIN rail mount universal-voltage devices. If you need two sets of contacts or an unusual timing pattern, go Square D; for a straight on-delay or off-delay on a single circuit the Eaton does the job.
6) What is the closest alternative to the Square D 822TD10HUNI multifunction timing relay for a DIN rail panel?
The Eaton TRL04 is the nearest peer. It is a TR Series universal timing relay rated 24-240 Vac/dc with a SPDT output and DIN rail mounting, offering 4 timing functions. The Square D 822TD10HUNI differs in two ways that matter at the panel: it is a DPDT relay with 15A AgNi contacts and accepts 12-240V AC/DC, so it covers a lower supply voltage floor and gives you two changeover contacts instead of one. If the circuit only needs a single changeover and the control voltage is 24V or higher, the Eaton covers it; if you need two isolated switched circuits off one timer, stay with the Square D.
7) What is the shortest and longest delay I can set on this Square D timer?
Timing spans 100 ms at the low end up to 10 days at the high end, across ranges from 100 ms...1 s through 1...10 d. Repeat accuracy is +/- 0.2%, which matters if you are sequencing motors or staging compressors where the same delay has to land the same way every cycle.
8) Will this timer reliably switch a low-current PLC or electronic input?
Minimum switching current is 100 mA at 5 V, so it will handle low-level signal circuits down to that point. Below it, the AgNi contacts are not guaranteed to make a dependable connection and you want a relay with gold-flashed contacts instead.
9) Can I use this timing relay in an unheated mechanical room or a rooftop HVAC panel?
Operating ambient range is -20 to 55 degrees C. An unheated indoor mechanical space is generally fine; an outdoor rooftop panel in a cold climate can drop below -20 C and in summer sun a sealed enclosure can exceed 55 C, so those applications need either a conditioned enclosure or a wider-range device.
10) How long will this time delay relay last in a cycling application?
Rated life is 30,000 electrical cycles and 15,000,000 mechanical cycles. Electrical life is the limit that matters in practice, so on a circuit cycling every few minutes around the clock you should treat the relay as a wear item and plan a spare, rather than assume the mechanical figure.
11) I only need a simple on-delay. Is there a simpler timer than the Square D 822TD10HUNI?
Yes. The Square D 822TD10HUNI is a multifunction unit with 10 selectable timing functions spanning 100 ms to 10 days, which is more capability than a single fixed on-delay job requires. The Eaton TRL04 is a 4-function timing relay covering ON/OFF delay on a 24-240 Vac/dc universal supply, DIN rail mounted, which is enough for a straightforward delay-on-make or delay-on-break sequence. Choose the Square D when the same part has to cover many timing schemes across a panel standard, and the Eaton when the function set is fixed and known.
12) Can the Eaton TRL04 be swapped in where a Square D 822TD10HUNI is wired, as a one-for-one replacement?
Not as a direct drop-in. Both mount to DIN rail and both take a universal supply, but the Eaton TRL04 is SPDT with one changeover contact, while the Square D 822TD10HUNI is DPDT, so a panel using both sets of contacts would leave a circuit unlanded. The Eaton's supply range starts at 24 Vac/dc against 12 V on the Square D, which matters if the control transformer feeds a 12V bus. Terminal numbering also differs between manufacturers, so plan on re-landing the wiring rather than a lift-and-shift.
13) Which timing relay should a panel builder standardize on across mixed 12V, 24V and 120V control circuits?
The Square D 822TD10HUNI accepts 12-240V AC/DC on a single part number, so one stocked item covers a 12V control bus through a 240V circuit, and its 10 selectable timing functions mean the same relay handles on-delay, off-delay and interval duty. The Eaton TRL04 is also a universal-input unit but its range begins at 24 Vac/dc and it provides 4 functions with a SPDT output. For a shop that wants one SKU on the shelf across every control voltage and timing scheme it builds, the broader input range and DPDT output of the Square D is the one to standardize on; where every panel runs 24V or above with a single switched circuit, the Eaton is sufficient.
14) How do I tell whether the timer is powered versus actively timing?
Two LEDs do it. Green indicates input power present. The red LED blinks while the timing cycle is running and goes steady once the output is energized, so a tech can read the state of the sequence from the panel door without a meter.
How fast can I get the Square D 822TD10HUNI delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D 822TD10HUNI come with a warranty?
Absolutely. The Square D 822TD10HUNI is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D 822TD10HUNI?
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