Robertshaw Electric Hot Water Thermostat & Cut-Out 50–80°C – ST1202134, W1M2-70, ST12-70K

$49.00 NZD
+ GST
SKU: HAST1270K
Inventory / Availability Status:
Available with Supplier (ETA 2 - 7 days to deliver)
This product is not part of any collections.

Delivery / Pick Up and Returns

Pick Up:

All orders are available for pick up. Pick up orders can be collected warehouse at Unit 5, 3 William Pickering Drive, Albany, Auckland at no extra charge.

You will receive a second email when your order is ready for pick up, this is usually within 24 hours for in stock items, or as soon as your item arrives for backorder items (often 3 - 7 days).

Nationwide New Zealand Shipping:

Shipping is available nationwide and internationally. We ship with NZ Post and New Zealand Couriers and our average delivery time for orders in stock is 1 - 5 days, and 2 - 10 days for orders that are available with supplier.

Special Order products, such as those on backorder, have varying ETAs. Please contact us if you want to check before ordering. Some parts (that come from Europe, America, or other overseas locations) can take a little while.

International Orders:

We offer shipping to international locations but not all countries and products are supported. Generally, if you are an international customer and you can select your country and address at checkout, it means we can ship that product to you. Please get in touch with us if you want further information.

If you want to be 100% certain about an ETA for a product, just send us a quick email or call and we'll get back to you ASAP with our best estimate. Thanks!

Returns:

If your order has not been picked up or shipped yet, you can cancel your order for a full refund.

If you have already received a part and it is incorrect or you no longer need it, you must let us know within 14 days of receiving your part.

NOTE FOR ALL RETURNS: You must notify us before sending a part back and get approval for returns. Parts that are sent back without notifying us in advance may not be approved for refund or return and you will be responsible for return shipping to get this part back to you.

We do not accept returns on electrical products, but may offer exchange / refund on other parts. The parts must not be used, damaged, or opened (on parts in packaging) and will be subject to restocking fees of 20% (depending on the part). This fee applies to all returns.

If you have received a faulty or damaged product, we will always offer a replacement (or refund depending on availability) at no cost to you.

Backorder Items:

As there are 100,000+ different SKUs we are able to source, we are unfortunately not able to stock all the parts that customers may need. Many parts will have to be ordered in from their respective suppliers and have varying lead times depending on the brand and part. For most parts, this is about 2 - 7 working days, however for some international brands or parts which are on backorder, there can be an extended lead time of 2 - 12+ weeks. If you are not happy to wait for your order, please get in touch with us and we can give you an ETA or cancel/refund your order for you right away.

This Electric Hot Water Thermostat with Safety Cut-Out is a direct replacement for a wide range of thermostats used in mains pressure electric hot water systems. Designed for reliability and safety, it features an adjustable temperature range of 50°C to 80°C and an integrated manual reset thermal cut-out for over-temperature protection.

With a standard SPST switch, 240V / 30A rating, and screw terminal contacts, it’s easy to install and ideal for servicing or upgrading hot water systems. A clearly marked temperature adjustment dial—in either blue or green depending on version—makes it user-friendly and precise.

Key Features:

  • Temperature Range: Adjustable from 50°C to 80°C
  • Safety Cut-Out (ECO): Manual reset at 84–90°C
  • Switch Type: SPST
  • Voltage Rating: 240V AC
  • Current Rating: 30 Amps
  • Differential: 8°C
  • Dial Type: Blue or green adjustment dial (depending on version)
  • Mounting Type: Surface-mount with screw terminals
  • Application: Suits many modern mains pressure electric water heaters

Common Fault Symptoms:

  • No hot water
  • Inconsistent water temperature
  • Tripping due to thermostat failure
  • Ageing or faulty grey-body thermostat units

Compatibility – Make sure to check that this part is compatible with your model – check your model number label and compare it to the values in the description.

Equivalent to Robertshaw Part Numbers:
ST12-70K, ST12-70, ST1201, ST1201133, ST1202134, ST1203133, ST1205113, ST1205, 7982830, TST1201, HW900, 1170089WS, W1M2-70, W1M70

Also Similar To:
WIM2/70, WIM3-70-80, W1M2/80, W1M2503, W1M25085, W1M25034, EWT1L2-501, EWT1L2-501N, EWT1L2-5085, EWT1L2-80KS, EWT1L2-523, EWT1L2-523L, EWT1L2-523N, EWT1L2-540EWT1L2-70K WIM270 20431-3 W1M-70 6060605 ST12-70KS ST1201133 ST12-70 W1M2/70 ST1204133 EWT1L2-523 1317213 GRIST-70 EWT1L2-513 EWT1L2-513N EWT1L2-513L EWT1L2-540 ST1201 ST1203133 EWT1L2-508 W1M2508 EWT1L2-5085 W1M25085 1M25034K EWT1L2-70KE W1M25034KE EWT1L2-70KS W1M2534K EWT1L2-520 W1M2520 EWT1L2-521 rheem 052012 EWT1L2-523 W1M2523 EWT1L2-523B EWT1L2-523B1L EWT1L2-523N EWT1L2-530 EWT1L2-535 EWT1L2-538 EWT1L2-540N EWT1L2-540NZ EWT1L2-543N EWT1L2-560

ST12551K ST551