
Interface plug-in relay, Harmony electromechanical relays, 12A, 1CO, 12V DC
Interface plug in relay, Harmony Electromechanical Relays, 12A, 1CO, 240V AC
This Harmony RSB interfacing plug-in relay has a control coil voltage of 240V AC and has 1 changeover contact single pole double throw with a rating of 12A. It helps to reduce the size of enclosures and increases machine reliability, you can mount nearly everywhere. Plug in type allows easy installation and maintenance. The product is IP40 and has a transparent cover allowing operator to visually inspect the status of contacts.
| Range of product | Harmony Electromechanical Relays |
| Series name | RSB series |
| Product or component type | Plug-in relay |
| Relay type | Interface relay |
| Contacts type and composition | 1 C/O |
| Status LED | Without |
| [Uc] control circuit voltage | 240 V AC 50/60 Hz |
| Control type | Without lockable test button |
| [Ithe] conventional enclosed thermal current | 12 A at -40…40 °C |
| Average resistance | 33000 Ohm network: AC at 20 °C +/- 10 % |
| [Ue] rated operational voltage | 192...360 V AC 50/60 Hz |
| [Uimp] rated impulse withstand voltage | 3.6 kV conforming to IEC 61000-4-5 |
| [Ie] rated operational current | 12 A (AC-1/DC-1) NO conforming to IEC, 6 A (AC-1/DC-1) NC conforming to IEC |
| [Ui] rated insulation voltage | 400 V conforming to IEC 60947 |
| Maximum switching voltage | 300 V DC conforming to IEC |
| Drop-out voltage threshold | >= 0.15 Uc AC |
| Load current | 12 A at 250 V AC, 12 A at 28 V DC |
| Minimum switching current | 10 mA |
| Maximum switching capacity | 3000 VA/336 W |
| minimum switching voltage | 12 V |
| Minimum switching capacity | 120 mW at 10 mA, 12 V |
| Operating time | 20 ms operating, 20 ms reset |
| Mechanical durability | 10000000 cycles |
| Electrical durability | 100000 cycles, 12 A at 250 V, AC-1 NO, 100000 cycles, 6 A at 250 V, AC-1 NC |
| Safety reliability data | B10d = 100000 |
| Operating rate | <= 600 cycles/hour under load, <= 18000 cycles/hour no-load |
| Average coil consumption | 0.75 VA AC |
| Removable legend | Without |
| Protection category | RT I |
| Operating position | Any position |
| Test levels | Level A group mounting |
| Device presentation | Complete product |
| Sale per indivisible quantity | 10 |
| Contacts material | Silver alloy (AgNi) |
| Shape of pin | Flat (PCB type) |
| Net weight | 0.014 kg |
| Compatibility code | RSB |
| Dielectric strength | 1000 V AC between contacts, 2500 V AC between poles, 5000 V AC between coil and contact |
| Vibration resistance | +/- 1 mm (f= 10…55 Hz) conforming to IEC 60068-2-6 |
| IP degree of protection | IP40 conforming to IEC 60529 |
| Ambient air temperature for operation | -40…70 °C (AC) |
| Standards | UL 508, CSA C22.2 No 14, IEC 61810-1 |
| Product certifications | CSA, UL, EAC |
| Marking | CE |
| Ambient air temperature for storage | -40…85 °C |
| Shock resistance | 10 gn (duration = 11 ms) for not operating conforming to IEC 60068-2-27, 5 gn (duration = 11 ms) for in operation conforming to IEC 60068-2-27 |
| Package 1 | 1 PCE, 31.1 cm × 2.5 cm × 2.2 cm (L × W × H), 15 g |
| Package 2 | 10 BB1, 31.1 cm × 2.5 cm × 2.2 cm (L × W × H), 161 g |
| Package 3 | 350 S01, 40 cm × 15 cm × 15 cm (L × W × H), 5.84 kg |
No matching specifications
Official documents from Schneider Electric, downloaded directly from the manufacturer.
RSB1A120U7 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Yes — mention it when you request a quote for RSB1A120U7 and we'll include express shipping options in our reply.
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for RSB1A120U7, subject to availability and destination.

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