Harmony Electromechanical Relays
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PLUG-IN RELAY
Harmony, Interface plug-in relay, 12 A, 1 CO, 220 V AC
SKU RSB1A120M7Schneider Electric RSB1A120M7 is a plug-in relay in the Harmony Electromechanical Relays range. Key specifications include ip protection: IP40 conforming to IEC 60529; operational voltage: 176...330 V AC 50/60 Hz; control voltage: 220 V AC 50/60 Hz.
IP40 conforming to IEC 60529IP protection
176...330 V AC 50/60 HzOperational voltage
220 V AC 50/60 HzControl voltage
PRODUCT DATA
Technical specifications
Source: Schneider Electric product catalog.
Verified September 18, 2026.
| Product reference | RSB1A120M7 |
|---|---|
| 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 | 220 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 | 176...330 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 | IEC 61810-1 UL 508 CSA C22.2 No 14 |
| Product certifications | CSA EAC UL |
| 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 |
For complete electrical ratings, applicable standards, connection requirements and installation instructions, consult the official Schneider Electric reference ↗.