The 3RB20 and 3RB21 are relays from Siemens' 3RP series, designed for reliable control and protection in electrical circuits. They are compact, versatile, and commonly used for switching applications in various industrial environments. These relays offer high performance and durability for demanding conditions.
SPECIFICATION
Both relays feature a space-saving, compact design ideal for confined panel spaces.
They offer adjustable thermal overload protection, accommodating a range of current settings to protect motors from overheating.
Each relay includes integrated auxiliary contacts (1 NO + 1 NC) for additional signaling or control functions.
Designed to withstand harsh industrial environments, they have a high degree of protection (IP20), ensuring reliability and long service life.
The relays feature straightforward operation and settings adjustments, making them user-friendly for various applications.
Power Relay
Power Relay
Power Plug In Relay
PCB Mount
PCB Mount
Relay
Relay
Relay
Miniature plug in relay
Miniature plug in relay
Plug in relay
Rail Power Relay
Impulse relay
Impulse relay
Rail Power Relay
Impulse relay
Impulse relay
DIN Rail Mount Timer Relay
Impulse relay
Input Coupler Series Relay
Pluggable interface relay
Interface Relays
Input Coupler Series Relay
Interface Relays
Pluggable Interface Relay
Pluggable Interface Relay
Input Coupler Series Relay
Interface Relay
Relay
Relay
Relay
Mount Timer Relay
Mount Timer Relay
Bimetallic overload relay
Bimetallic overload relay
IEC Control Relay
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India-Delhi
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