An electromagnetic relay for starting a motor of a starter, the electromagnetic relay comprising: a resistor to reduce an activation current that flows through the motor from a battery for activation of the motor; a relay contact that causes the starting current to flow while bypassing the resistor; a relay coil that forms an electromagnet when excited by energization; and a control circuit that controls an excited state of the relay coil for activation of the motor to open or close the relay contact, thus controlling energization of the motor from the battery via the resistor, wherein the electromagnetic relay incorporates therein the control circuit, and the control circuit comprises: an IC comprising a package; and IC elements included in the IC that control the excited state of the relay coil, the package protecting the IC elements, the electromagnetic relay further comprising: a first partitioning wall member and a second partitioning wall member, the first and second partitioning wall members (21, 23) being arranged at respective one end and the other end of the relay coil in an axial direction thereof, each of the first and second partitioning wall members (21, 23) forming a part of a magnetic circuit, the package being attached to be closely adjacent to any one of the first and second partitioning wall members, each of the first and second partitioning wall members being made of a metal member. a resistor to reduce an activation current that flows through the motor from a battery for activation of the motor; a relay contact that causes the starting current to flow while bypassing the resistor; a relay coil that forms an electromagnet when excited by energization; and a control circuit that controls an excited state of the relay coil for activation of the motor to open or close the relay contact, thus controlling energization of the motor from the battery via the resistor, wherein the electromagnetic relay incorporates therein the control circuit, and the control circuit comprises: an IC comprising a package; and IC elements included in the IC that control the excited state of the relay coil, the package protecting the IC elements, the electromagnetic relay further comprising: a first partitioning wall member and a second partitioning wall member, the first and second partitioning wall members (21, 23) being arranged at respective one end and the other end of the relay coil in an axial direction thereof, each of the first and second partitioning wall members (21, 23) forming a part of a magnetic circuit, the package being attached to be closely adjacent to any one of the first and second partitioning wall members, each of the first and second partitioning wall members being made of a metal member. an IC comprising a package; and IC elements included in the IC that control the excited state of the relay coil, the package protecting the IC elements, the electromagnetic relay further comprising: a first partitioning wall member and a second partitioning wall member, the first and second partitioning wall members (21, 23) being arranged at respective one end and the other end of the relay coil in an axial direction thereof, each of the first and second partitioning wall members (21, 23) forming a part of a magnetic circuit, the package being attached to be closely adjacent to any one of the first and second partitioning wall members, each of the first and second partitioning wall members being made of a metal member. a first partitioning wall member and a second partitioning wall member, the first and second partitioning wall members (21, 23) being arranged at respective one end and the other end of the relay coil in an axial direction thereof, each of the first and second partitioning wall members (21, 23) forming a part of a magnetic circuit, the package being attached to be closely adjacent to any one of the first and second partitioning wall members, each of the first and second partitioning wall members being made of a metal member.