Thermal Overload Relays - Schneider Electric

Schneider Electric LR3D3253 is a non-differential thermal overload relay designed for unbalanced networks, classified under the LR3D sub-range. It features a 3-pole configuration and offers protection functions with a Class 10A rating. The relay supports a rated current range of 15-25 A, with thermal overload 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. The connection type for this part includes direct to contactor for upstream connections and spring-type fast connections for both outgoing cables and the control circuit. The LR3D3253 is capable of handling a rated voltage (AC) of up to 690 V at frequencies ranging from 0 to 400Hz, with a minimum operating current of 15 A and a maximum of 25 A.

Schneider Electric LR3D08L6 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 with a class 20 response. This part is designed for direct connection to a contactor upstream, with outgoing cables connected via lugs and a control circuit connected through screw-clamp terminals. It provides thermal overload protection settings adjustable between 2.5-4A. Additionally, it includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The LR3D08L6 is rated for a phase-to-phase voltage of up to 690 V (0-400Hz) and supports a minimum current of 2.5 A and a maximum current of 4 A.

Schneider Electric LR3D07L6 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 with settings adjustable from 1.6 to 2.5A. The connection type includes direct to contactor for upstream connections and lugs for outgoing cables, alongside screw-clamp terminals for the control circuit. This part is equipped with 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 rated current spans from a minimum of 1.6 A to a maximum of 2.5 A, classified under protection class 20.

Schneider Electric LR3D06L is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a direct to contactor connection type for upstream connections and screw-clamp terminals for outgoing cables and the control circuit. This 3-pole relay is equipped with protection functions classified as Class 20. It operates within a rated current range of 1-1.6 A, with protection settings adjustable within the same range. The LR3D06L includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. It is rated for a voltage of up to 690 V AC (0-400Hz) phase-to-phase, with a minimum operating current of 1 A and a maximum of 1.6 A.

Schneider Electric LR3D05L is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a direct to contactor connection type for upstream connections and screw-clamp terminals for outgoing cables and the control circuit. This 3-pole relay is engineered for protection functions with a Class 20 rating. It operates within a rated current range of 0.63-1 A and offers protection settings for thermal overload from 0.63 to 1A. The LR3D05L includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. It is capable of handling a rated voltage (AC) phase-to-phase of up to 690 V at frequencies from 0 to 400Hz, with a minimum current threshold of 0.63 A and a maximum current capacity of 1 A.

Schneider Electric LA7D03E, part of the LRD sub-range, is a mounting adapter designed for use with overload relays. This component facilitates the direct mounting of relays onto contactors, ensuring a secure and precise fit for optimal performance in automation systems.

Schneider Electric LTM9CEXP03, part of the LTMR (TeSys T) sub-range, is an expansion module designed to enhance the functionality of TeSys T motor management systems. This module facilitates additional input and output options, supporting a broader range of monitoring and control capabilities for industrial automation applications.

Schneider Electric LT4730F7S, part of the LT47 sub-range, features a 3 Pole configuration with connection via 2 measurement current transformers using a screw-clamp method. It is designed with electronic overcurrent relay protection functions including locked rotor mechanical jamming, overload with Imax greater than Isetting, and sensitivity to phase failure. The rated current for this part spans from 3 to 30 A, supported by a control voltage range of 100-120 Vdc and an AC control voltage of 100-120 Vac at 50/60Hz. Protection settings are adjustable with thermal overload settings from 3-30A, a D-time knob ranging from 0.5-30s, and an O-time knob from 0.3-10s. It includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The supply voltage can be either AC or DC within the 100-120 V range, and it can handle a rated voltage (AC) phase-to-phase of up to 690 V at 50-60Hz, with a minimum current threshold of 3 A and a maximum of 30 A.

Schneider Electric LT4706F7S, part of the LT47 sub-range, features a connection type of 2 measurement current transformers with screw-clamp terminals and is designed with 3 poles. It includes protection functions such as an electronic overcurrent relay, locked rotor mechanical jamming, overload with Imax greater than Isetting, and sensitivity to phase failure. The rated current for this device ranges from 0.5-6 A. It operates on a control voltage of 100-120 Vdc and has AC control voltage capabilities of 100-120 Vac at 50/60Hz. The protection settings include thermal overload adjustments from 0.5-6A, with a D-time knob ranging from 0.5-30s and an O-time knob from 0.3-10s. It also features 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The supply voltage is rated for 100-120 V AC/DC, and it can handle a phase-to-phase rated voltage of up to 690 V at 50-60Hz. The minimum current specification is 0.5 A, and the maximum current capability is 6 A.

Schneider Electric LR97D38M7 is a 3-pole electronic overcurrent relay designed for direct connection to a contactor with outgoing cables connected via screw-clamp and the control circuit also utilizing a screw-clamp connection. It features protection functions including electronic overcurrent relay, locked rotor mechanical jamming, overload with Imax greater than Isetting, and sensitivity to phase failure. The rated current range is 20-38 A, with protection settings adjustable for thermal overload from 20-38A, a D-time knob ranging from 0.5-30s, and an O-time knob from 0.3-10s. It includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The supply voltage requirement is AC 200-240 V, with a rated voltage for phase-to-phase connections at 690 V (50-60Hz). The minimum current specification is 20 A, and the maximum current capability is 38 A.