Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAE901901R1020 — Auxiliary contact block
contactorPart number: 1SAE901901R1020
ABB EH04-20N (1SAE901901R1020) is a two-pole auxiliary contact block with two normally open contacts. Designed for compatible ABB installation contactors, it clips onto the left side without tools. The auxiliary circuit is rated at 500 V AC, with a 6 A conventional free-air thermal current; switching ratings depend on voltage and utilization category.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAE901901R1020 |
| Category | Electrical & controls |
| Product Net Width | 9 mm |
| Product Net Depth / Length | 65 mm |
| Product Net Height | 85 mm |
| Product Net Weight | 0.04 kg |
| Number of Main Contacts NO | 0 |
| Number of Main Contacts NC | 0 |
| Number of Auxiliary Contacts NO | 2 |
| Number of Auxiliary Contacts NC | 0 |
| Number of Poles | 2P |
| Rated Operational Voltage | Auxiliary circuit: 500 V AC; 250 V DC |
| Rated Frequency (f) | Auxiliary circuit: 50/60 Hz |
| Conventional Free-air Thermal Current (I th ) | Auxiliary circuit: 6 A |
| Rated Operational Current AC-15 (I e ) | 3 A at 415 V AC; 2 A at 500 V AC |
| Rated Operational Current DC-13 (I e ) | 0.55 A at 125 V DC; 0.27 A at 250 V DC |
| Rated Insulation Voltage (U i ) | 500 V |
| Rated Impulse Withstand Voltage (U imp ) | Auxiliary circuit: 4 kV |
| Maximum Electrical Switching Frequency | (AC-15) 360 cycles per hour |
| Minimum Switching Capacity | > 17 V |
| Power Loss | at Rated Operating Conditions per Pole 0.84 W |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1x 1 ... 1.5 mm² |
| Wire Stripping Length | Auxiliary Circuit, Top Terminals (1x 1.5) 7 mm |
| Degree of Protection | IP20 |
| Tightening Torque | Auxiliary Circuit 0.9 N·m |
| Terminal Type | Screw Terminals |
| Width in Number of Modular Spacings | 1.0 |
| Product Name | Auxiliary Contact |
| Maximum Operating Voltage UL/CSA | 600 V AC |
| General Use Rating UL/CSA | (600 V AC) 5 A |
| Published component type | Auxiliary contact block |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
What contact configuration does ABB 1SAE901901R1020 have?
The EH04-20N has two normally open auxiliary contacts and no normally closed auxiliary contacts. It is an auxiliary contact block, not a standalone power contactor.
Which contactors can the EH04-20N be used with?
ABB lists it for ESB16..N, ESB20..N, ESB25..N, ESB40..N, ESB63..N, ESB100..N, EN20..N, EN25..N and EN40..N installation contactors. Check the complete contactor type and serial number to confirm the specific installation.
What are the switching ratings of the EH04-20N auxiliary contacts?
The auxiliary circuit is rated up to 500 V AC and has a 6 A conventional free-air thermal current. Switching current depends on utilization and voltage: AC-15 is 3 A at 415 V AC, while DC-13 is 0.55 A at 125 V DC.
How much space does the EH04-20N need, and how does it attach?
The block measures 9 mm wide, 65 mm deep and 85 mm high. ABB describes a tool-free clip-on attachment on the left side of a compatible installation contactor.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.