How to Wire a Contactor for Star Delta Motor Starting: Complete Guide
Learn how to wire a contactor for star delta motor starting with IEC 60947 circuits, timer logic, and safe sizing practices for engineers. Shop...
The ABB CT-ERD.12 (SKU: 1SVR500100R0000) is an ON-delay timer relay from the CT-D series, designed for precise time-controlled switching in industrial automation and control panel applications. Featuring a single changeover (1C/O) output contact rated at 6A and a wide supply voltage range of 24–240V AC / 24–48V DC, the CT-ERD.12 offers exceptional versatility across diverse electrical installations. Its compact 17.5 mm DIN rail form factor makes it ideal for space-constrained enclosures.
| Product Net Width | 17.5 mm |
|---|---|
| Product Net Height | 70 mm |
| Product Net Depth / Length | 63 mm |
| Product Net Weight | 0.052 kg |
| Timer Relay Type | ON-Delay |
|---|---|
| Time Range | 0.05 s ... 100 h |
| Rated Control Supply Voltage (Us) | 24 ... 240 V AC, 24 ... 48 V DC |
| Rated Operational Voltage | Auxiliary Circuit 250 V |
| Rated Frequency (f) | 50 / 60 Hz, DC |
| Output | 1 C/O (SPDT) Contact |
| Terminal Type | Screw Terminals |
| Rated Operational Current AC-12 (Ie) | (230 V) 6 A |
| Rated Operational Current AC-15 (Ie) | (230 V) 3 A |
| Rated Operational Current DC-12 (Ie) | (24 V) 6 A |
| Rated Operational Current DC-13 (Ie) | (24 V) 2 A |
| Rated Impulse Withstand Voltage (Uimp) | Input Circuit 4 kV |
| Rated Insulation Voltage (Ui) | Input Circuit / Output Circuit 300 V |
| Degree of Protection | Housing IP50, Terminals IP20 |
| Overvoltage Category | III |
| Pollution Degree | 3 |
| Short-Circuit Protective Devices | Output Circuit NC - F Type Fuses 6 A, Output Circuit NO - F Type Fuses 10 A |
| Connecting Capacity | Flexible 1x 0.5 ... 2.5 mm², Flexible 2x 0.5 ... 1.5 mm², Rigid 1x 0.5 ... 4 mm², Rigid 2x 0.5 ... 1.5 mm² |
| Tightening Torque | 0.5 ... 0.8 N·m |
| Wire Stripping Length | 7 mm |
| Recommended Screw Driver | 0.8 x 4, Pozidriv 1 |
| Mounting Position | 1 ... 6 |
| Mounting on DIN Rail | TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715, TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715 |
| Standards | CAN/CSA C22.2 No.14, IEC/EN 63000, IEC/EN 61812-1, UL 508 |
| Maximum Operating Voltage UL/CSA | Output Circuit 300 V AC |
|---|---|
| Contact Rating UL/CSA | C300 |
| Connecting Capacity UL/CSA | Flexible 1x 18-14 AWG, Flexible 2x 18-16 AWG, Rigid 1x 20-12 AWG, Rigid 2x 20-16 AWG |
| Tightening Torque UL/CSA | 4.43 ... 7.08 in·lb |
| Pilot Duty UL/CSA | C300 |
| Flammability According to UL94 | V-2 |
| Part number | 1SVR500100R0000 |
|---|---|
| Type designation | CT-ERD.12 |
| Brand | ABB |
| Condition | New, factory sealed |
| Source | ABB and its authorised distributors |
| Warranty | Manufacturer warranty |
| EAN | 4013614350658 |
| eCl@ss | 27371605 |
| Minimum Order Quantity | 1 piece |
| Customs Tariff Number | 85364900 |
| Ambient Air Temperature | Operation -20 ... +60 °C, Storage -40 ... +85 °C |
|---|---|
| Maximum Operating Altitude Permissible | Without Derating 2000 m |
| REACH Declaration | 1SVD981001-4501 |
|---|---|
| RoHS Declaration | 1SVD981001-4401 |
| RoHS Information | Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019 |
| Toxic Substances Control Act - TSCA | 2CMT2023-006536 |
| ETIM 7 | EC001439 - Timer relay |
|---|---|
| eClass | V11.0 : 27371605 |
| UNSPSC | 39122329 |
| E-Number (Sweden) | 4033006 |
| Package Level 1 Units | box 1 piece |
|---|---|
| Package Level 1 Width | 89 mm |
| Package Level 1 Depth / Length | 20 mm |
| Package Level 1 Height | 65 mm |
| Package Level 1 Gross Weight | 0.065 kg |
| Package Level 1 EAN | 4013614350658 |
| Package Level 2 EAN | 4013614580239 |
| Shipping weight | 0.065 kg |
| Ships from | Türkiye |
| Dispatch | 9 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 30 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of CT-ERD.12 is 6 A.
The rated operational voltage of CT-ERD.12 is 24–240 – 24–48V DC V DC.
The tariff (HS) code on file for CT-ERD.12 is 85364900.
The EAN (GTIN) of CT-ERD.12 is 4013614350658.
CT-ERD.12 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Learn how to wire a contactor for star delta motor starting with IEC 60947 circuits, timer logic, and safe sizing practices for engineers. Shop...