Siemens
Siemens 48BSL3M20 ESP100 Solid State Overload Relay - 57-115A
Siemens 48BSL3M20 ESP100 Solid State Overload Relay
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Solid State Overload Relay
57-115 Amp Range
ESP100 Series
Heavy Duty Motor Protection
Manual Reset
Compatible with Class 48 Contactors
Product description
The Siemens 48BSL3M20 is a solid-state overload relay from the ESP100 series, engineered for heavy-duty motor protection. It offers a substantial current range of 57 to 115 Amps and is designed for compatibility with Class 48 motor starters.
This relay provides reliable protection against overloads and phase loss for large industrial motors. Its solid-state technology ensures precise and consistent tripping performance, safeguarding critical equipment and minimizing downtime.
Stanlo Automation, your veteran-owned source for surplus industrial automation parts, carries the Siemens 48BSL3M20. We offer high-quality surplus components to keep your operations running efficiently.
Technical specifications
| Part Number | 48BSL3M20 |
| Manufacturer | Siemens |
| Family | ESP100 |
| Type | 48BS |
| Amperage Min | 57A |
| Amperage Max | 115A |
| Relay Style | Solid State |
| Suitable For | Class 48 Contactors |
Common applications
Large Motor Protection
Industrial Machinery
Pump Systems
Manufacturing Equipment
Heavy Duty Applications
Compatible systems
Designed for use with Siemens Class 48 motor starters and contactors.
Also known as
Siemens 48BSL3M20
Replaces / compatible with
This overload relay is designed for high-amperage motors and can replace older thermal overload units in Class 48 motor starter applications.
Technical note
Expert tip
The 48BSL3M20 is suitable for use with size 2, 2.5, 3, 3.5, and 4 Class 48 contactors.What happens next?
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Frequently asked questions
What is the current range for the Siemens 48BSL3M20 overload relay?
The Siemens 48BSL3M20 overload relay is designed to protect motors with full load currents ranging from 57 to 115 Amps. This wide range makes it suitable for many larger industrial motor applications.