ABB CA4-01 Auxiliary Contact Block
The CA4-01 is a 1-pole, front-mounted auxiliary contact block with screw terminals, providing one instantaneous normally closed (N.C.) contact. It fits directly onto the front of a wide range of ABB AF and NF series contactors and contactor relays, offering a compact way to add signalling or interlocking functionality without increasing the side footprint of the assembly, suited to panel building and industrial control applications across the UAE.
Key Features
- 1 N.C. instantaneous auxiliary contact for interlocking and status signalling
- Front-mounted, compact design occupying minimal additional space compared to side-mounted blocks
- Compatible with an extensive range of ABB AF09 to AF96 contactors and NF22E to NF40E contactor relays
- Rated insulation voltage of 690V and impulse withstand voltage of 6kV for reliable performance in standard industrial environments
- Genuine ABB quality
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
CA4-01 |
| Poles |
1P |
| Contact Configuration |
1 N.C. |
| Rated Operational Voltage (Auxiliary Circuit) |
690V |
| Rated Insulation Voltage (Ui) |
690V (IEC) / 600V (UL/CSA) |
| Rated Impulse Withstand Voltage (Uimp) |
6 kV |
| Terminal Type |
Screw Terminals |
| Connecting Capacity |
Rigid 1/2x 1–2.5 mm² / Flexible with Ferrule 1/2x 0.75–2.5 mm² |
| Degree of Protection |
IP20 (auxiliary terminals) |
| Mounting |
Front mounted |
| Net Width |
9.9 mm |
| Net Height |
43 mm |
| Net Depth / Length |
39.5 mm |
| Net Weight |
0.014 kg |
| Suitable For |
ABB AF09–AF96, AFC/B variants, NF22E–NF40E, NFC and NFB series contactors and contactor relays |
Applications
- Interlocking and status signalling for contactor and contactor relay control circuits
- Motor starter panel wiring requiring compact front-mounted auxiliary contacts
- Control circuit expansion on industrial contactor assemblies in UAE facilities
- Retrofit accessory for existing ABB AF and NF series contactor installations
FAQ
-
What does this contactor control?
It's an electrically-operated switch used to make/break a load circuit repeatedly under remote or automatic control — commonly lighting banks, motors, HVAC equipment, or heating loads switched via a timer, BMS, or control relay.
-
Does this need a separate overload relay for motor protection?
Yes, if it's controlling a motor — a contactor alone doesn't protect against sustained overload. Pair it with a compatible thermal overload relay (see ABB's matching TF/TA-series relays) to form a full motor starter.
-
Can I control this contactor with a timer or BMS?
Yes — the coil is designed for remote switching from a timer, PLC, BMS, or control relay rather than direct manual operation, making it suited to automated load switching.
-
Can I install this myself?
No. Contactors are wired into live control and power circuits and must be installed by a licensed electrician in accordance with UAE wiring regulations.