Thermal Overload Relays - Schneider Electric

Schneider Electric LRD3503, part of the LRD sub-range, is a differential thermal overload relay designed for direct connection to a contactor with spring-type fast connections for both upstream and outgoing cables, as well as the control circuit. This 3-pole device offers protection functions classified as Class 10A, with a rated current range of 37-50 A. It features protection settings for thermal overload within the same range (37-50A), and includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The LRD3503 is rated for a voltage of up to 690 V AC (0-400Hz) and operates within a minimum current of 37 A and a maximum current of 50 A.

Schneider Electric LRD3256 is a differential thermal overload relay belonging to the LRD sub-range. It features a 3-pole configuration and offers a connection type that includes direct to contactor for upstream connections and screw-clamp lugs for the control circuit. This part is designed with protection functions classified as Class 10A, supporting a rated current range of 17-25 A for thermal overload protection settings. It includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The rated voltage for phase-to-phase connections is specified up to 690 V for frequencies ranging from 0 to 400Hz. The minimum and maximum current ratings for this part are set at 17 A and 25 A, respectively.

Schneider Electric LRD313L6 is a differential thermal overload relay designed for direct connection to a contactor, with outgoing cables connected via lugs and a control circuit utilizing screw-clamp connections. This 3-pole device offers protection functions classified as Class 20, with a rated current range of 9-13 A. It features protection settings for thermal overload within the same range (9-13A) and includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The rated voltage for phase-to-phase operation, applicable across frequencies from 0 to 400Hz, is 690 V. The minimum and maximum current specifications are set at 9 A and 13 A, respectively.

Schneider Electric LRD3136 is a differential thermal overload relay designed for direct connection to a contactor and features screw-clamp terminals for the control circuit. This 3-pole device offers protection functions classified under Class 10A, with a rated current range of 9-13 A. It includes protection settings for thermal overload within the same range. The LRD3136 is equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts, supporting a rated voltage (AC) phase-to-phase of up to 690 V at frequencies from 0 to 400Hz. The minimum and maximum current specifications are set at 9 A and 13 A, respectively.

Schneider Electric LRD12L6 is a differential thermal overload relay designed for direct connection to a contactor and features screw-clamp terminals for the control circuit. This 3-pole device offers protection functions in Class 20, with a rated current range of 5.5-8 A. It includes protection settings for thermal overload within the same range. The LRD12L6 is equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. It operates at a rated voltage (AC) of up to 690 V for phase-to-phase connections, accommodating frequencies from 0 to 400Hz. The minimum operating current is set at 5.5 A, with a maximum threshold of 8 A.

Schneider Electric LR3D3503 is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a 3-pole configuration and offers protection functions classified under Class 10A. This part is designed for direct connection to a contactor upstream, with outgoing cables and control circuit connections utilizing spring-type fast connections. It supports a rated current range of 37-50 A, with protection settings adjustable within the same range. The LR3D3503 includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. It is rated for a phase-to-phase voltage of up to 690 V at frequencies ranging from 0 to 400Hz. The minimum operating current is 37 A, and the maximum is 50 A.

Schneider Electric LR3D3326 is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a direct connection to the contactor upstream, with outgoing cables connected via lugs and a control circuit utilizing screw-clamp connections. This 3-pole relay is engineered for a rated current of 23-32 A, with protection settings adjustable within the same range for thermal overload. It includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The LR3D3326 is capable of handling a rated voltage (AC) phase-to-phase of up to 690 V at frequencies ranging from 0 to 400Hz, with a minimum operating current of 23 A and a maximum of 32 A.

Schneider Electric LR3D3323 is a non-differential thermal overload relay designed for unbalanced networks, classified under the LR3D range. It features a 3-pole configuration and offers protection functions with a Class 10A rating. The relay supports a rated current range of 23-32 A, with protection settings adjustable within the same range. It is equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts for enhanced connectivity options. The connection type is direct to contactor for upstream connections and spring-type (fast connection) for both outgoing cables and control circuit, facilitating quick and secure installations. The LR3D3323 operates at a rated voltage (AC) of up to 690 V for phase-to-phase connections, accommodating frequencies of 0-400Hz. Its operational current limits span from a minimum of 23 A to a maximum of 32 A.

Schneider Electric LR3D3186 is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a direct connection type to the contactor for upstream connections and lugs for outgoing cables, with screw-clamp terminals for the control circuit. This 3-pole relay is engineered for protection functions classified under Class 10A, with a rated current range of 12-18 A. The protection settings for thermal overload are adjustable within the same range. It includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts for enhanced functionality. The rated voltage for phase-to-phase applications is up to 690 V (0-400Hz), with a minimum operating current of 12 A and a maximum of 18 A.

Schneider Electric LR3D3183 is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a 3-pole configuration and offers protection functions classified under Class 10A. This part is designed for direct connection to a contactor for upstream connections, with outgoing cables and control circuit connections utilizing spring-type fast connections. It supports a rated current range of 12-18 A, with thermal overload protection settings adjustable within the same range. The LR3D3183 includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. It is rated for a phase-to-phase voltage of up to 690 V at frequencies ranging from 0 to 400Hz. The minimum operating current is 12 A, and the maximum current capacity is 18 A.